AP U.S. History
Concept Outline
The concept outline for AP U.S. History presents the course content organized by key
concept rather than in sequential units. The coding that appears in the AP U.S. History
Course and Exam Description, Effective Fall 2019 corresponds to the organization of the
course content found in this conceptual outline.
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Key Concept 1.1 — As native populations migrated and settled across
the vast expanse of North America over time, they developed distinct and
increasingly complex societies by adapting to and transforming their
diverse environments.
I. Dierent native societies adapted to and transformed their environments through
innovations in agriculture, resource use, and social structure.
A. The spread of maize cultivation from present-day Mexico northward into the
present-day American Southwest and beyond supported economic development,
settlement, advanced irrigation, and social diversication among societies.
B. Societies responded to the aridity of the Great Basin and the grasslands of the
western Great Plains by developing largely mobile lifestyles.
C. In the Northeast, the Mississippi River Valley, and along the Atlantic seaboard
some societies developed mixed agricultural and hunter-gatherer economies
that favored the development of permanent villages.
D. Societies in the Northwest and present-day California supported themselves by
hunting and gathering, and in some areas developed settled communities
supported by the vast resources of the ocean.
Key Concept 1.2 — Contact among Europeans, Native Americans, and
Africans resulted in the Columbian Exchange and signicant social, cultural,
and political changes on both sides of the Atlantic Ocean.
I. European expansion into the Western Hemisphere generated intense social,
religious, political, and economic competition and changes within European
societies.
A. European nations’ eorts to explore and conquer the New World stemmed from
a search for new sources of wealth, economic and military competition, and a
desire to spread Christianity.
B. The Columbian Exchange brought new crops to Europe from the Americas,
stimulating European population growth, and new sources of mineral wealth,
which facilitated the European shift from feudalism to capitalism.
C. Improvements in maritime technology and more organized methods for
conducting international trade, such as joint-stock companies, helped drive
changes to economies in Europe and the Americas.
II. The Columbian Exchange and development of the Spanish Empire in the Western
Hemisphere resulted in extensive demographic, economic, and social changes.
A. Spanish exploration and conquest of the Americas were accompanied and
furthered by widespread deadly epidemics that devastated native populations
and by the introduction of crops and animals not found in the Americas.
B. In the encomienda system, Spanish colonial economies marshaled Native
American labor to support plantation-based agriculture and extract precious
metals and other resources.
C. European traders partnered with some West African groups who practiced
slavery to forcibly extract enslaved laborers for the Americas. The Spanish
imported enslaved Africans to labor in plantation agriculture and mining.
D. The Spanish developed a caste system that incorporated, and carefully dened
the status of, the diverse population of Europeans, Africans, and Native
Americans in their empire.
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Period 1: c. 1491–c. 1607
III. In their interactions, Europeans and Native Americans asserted divergent worldviews
regarding issues such as religion, gender roles, family, land use, and power.
A. Mutual misunderstandings between Europeans and Native Americans often
dened the early years of interaction and trade as each group sought to make
sense of the other. Over time, Europeans and Native Americans adopted some
useful aspects of each other’s culture.
B. As European encroachments on Native Americans’ lands and demands on their
labor increased, native peoples sought to defend and maintain their political
sovereignty, economic prosperity, religious beliefs, and concepts of gender
relations through diplomatic negotiations and military resistance.
C. Extended contact with Native Americans and Africans fostered a debate among
European religious and political leaders about how non-Europeans should be
treated, as well as evolving religious, cultural, and racial justications for the
subjugation of Africans and Native Americans.
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AP U.S. History Concept Outline
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Period 1: c. 1491–c. 1607
Key Concept 2.1 — Europeans developed a variety of colonization and
migration patterns, inuenced by dierent imperial goals, cultures, and the
varied North American environments where they settled, and they competed
with each other and American Indians for resources.
I. Spanish, French, Dutch, and British colonizers had dierent economic and imperial
goals involving land and labor that shaped the social and political development of
their colonies as well as their relationships with native populations.
A. Spanish eorts to extract wealth from the land led them to develop institutions
based on subjugating native populations, converting them to Christianity, and
incorporating them, along with enslaved and free Africans, into the Spanish
colonial society.
B. French and Dutch colonial eorts involved relatively few Europeans and relied
on trade alliances and intermarriage with American Indians to build economic
and diplomatic relationships and acquire furs and other products for export
to Europe.
C. English colonization eorts attracted a comparatively large number of male
and female British migrants, as well as other European migrants, all of whom
sought social mobility, economic prosperity, religious freedom, and improved
living conditions. These colonists focused on agriculture and settled on land
taken from Native Americans, from whom they lived separately.
II. In the 17th century, early British colonies developed along the Atlantic coast,
with regional dierences that reected various environmental, economic, cultural,
and demographic factors.
A. The Chesapeake and North Carolina colonies grew prosperous exporting
tobacco—a labor-intensive product initially cultivated by white, mostly male
indentured servants and later by enslaved Africans.
B. The New England colonies, initially settled by Puritans, developed around small
towns with family farms and achieved a thriving mixed economy of agriculture
and commerce.
C. The middle colonies supported a ourishing export economy based on cereal
crops and attracted a broad range of European migrants, leading to societies
with greater cultural, ethnic, and religious diversity and tolerance.
D. The colonies of the southern Atlantic coast and the British West Indies used
long growing seasons to develop plantation economies based on exporting
staple crops. They depended on the labor of enslaved Africans, who often
constituted the majority of the population in these areas and developed their
own forms of cultural and religious autonomy.
E. Distance and Britains initially lax attention led to the colonies creating
self-governing institutions that were unusually democratic for the era. The New
England colonies based power in participatory town meetings, which in turn
elected members to their colonial legislatures; in the southern colonies, elite
planters exercised local authority and also dominated the elected assemblies.
III. Competition over resources between European rivals and American Indians
encouraged industry and trade and led to conict in the Americas.
A. An Atlantic economy developed in which goods, as well as enslaved Africans
and American Indians, were exchanged between Europe, Africa, and the
Americas through extensive trade networks. European colonial economies
focused on acquiring, producing, and exporting commodities that were valued
in Europe and gaining new sources of labor.
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Period 2: c. 1607–c. 1754
B. Continuing trade with Europeans increased the ow of goods in and out of
American Indian communities, stimulating cultural and economic changes and
spreading epidemic diseases that caused radical demographic shifts.
C. Interactions between European rivals and American Indian populations fostered
both accommodation and conict. French, Dutch, British, and Spanish colonies
allied with and armed American Indian groups, who frequently sought alliances
with Europeans against other American Indian groups.
D. The goals and interests of European leaders and colonists at times diverged,
leading to a growing mistrust on both sides of the Atlantic. Colonists, especially
in British North America, expressed dissatisfaction over issues including
territorial settlements, frontier defense, self-rule, and trade.
E. British conicts with American Indians over land, resources, and political
boundaries led to military confrontations, such as Metacoms War (King Philip’s
War) in New England.
F. American Indian resistance to Spanish colonizing eorts in North America,
particularly after the Pueblo Revolt, led to Spanish accommodation of some
aspects of American Indian culture in the Southwest.
Key Concept 2.2 — The British colonies participated in political, social,
cultural, and economic exchanges with Great Britain that encouraged both
stronger bonds with Britain and resistance to Britain’s control.
I. Transatlantic commercial, religious, philosophical, and political exchanges led
residents of the British colonies to evolve in their political and cultural attitudes as
they became increasingly tied to Britain and one another.
A. The presence of dierent European religious and ethnic groups contributed
to a signicant degree of pluralism and intellectual exchange, which were
later enhanced by the rst Great Awakening and the spread of European
Enlightenment ideas.
B. The British colonies experienced a gradual Anglicization over time, developing
autonomous political communities based on English models with inuence
from intercolonial commercial ties, the emergence of a transatlantic print culture,
and the spread of Protestant evangelicalism.
C. The British government increasingly attempted to incorporate its North
American colonies into a coherent, hierarchical, and imperial structure in
order to pursue mercantilist economic aims, but conicts with colonists and
American Indians led to erratic enforcement of imperial policies.
D. Colonists’ resistance to imperial control drew on local experiences
of self-government, evolving ideas of liberty, the political thought of the
Enlightenment, greater religious independence and diversity, and an
ideology critical of perceived corruption in the imperial system.
II. Like other European empires in the Americas that participated in the Atlantic slave
trade, the English colonies developed a system of slavery that reected the specic
economic, demographic, and geographic characteristics of those colonies.
A. All the British colonies participated to varying degrees in the Atlantic slave
trade due to the abundance of land and a growing European demand for colonial
goods, as well as a shortage of indentured servants. Small New England farms
used relatively few enslaved laborers, all port cities held signicant minorities
of enslaved people, and the emerging plantation systems of the Chesapeake and
the southern Atlantic coast had large numbers of enslaved workers, while the
great majority of enslaved Africans were sent to the West Indies.
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Period 2: c. 1607–c. 1754
B. As chattel slavery became the dominant labor system in many southern
colonies, new laws created a strict racial system that prohibited interracial
relationships and dened the descendants of African American mothers as
black and enslaved in perpetuity.
C. Africans developed both overt and covert means to resist the dehumanizing
nature of slavery and maintain their family and gender systems, culture,
and religion.
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Period 2: c. 1607–c. 1754
Key Concept 3.1 — British attempts to assert tighter control over its North
American colonies and the colonial resolve to pursue self-government led to a
colonial independence movement and the Revolutionary War.
I. The competition among the British, French, and American Indians for economic and
political advantage in North America culminated in the Seven Years’ War (the French
and Indian War), in which Britain defeated France and allied American Indians.
A. Colonial rivalry intensied between Britain and France in the mid-18th century,
as the growing population of the British colonies expanded into the interior of
North America, threatening French–Indian trade networks and American Indian
autonomy.
B. Britain achieved a major expansion of its territorial holdings by defeating the
French, but at tremendous expense, setting the stage for imperial eorts to raise
revenue and consolidate control over the colonies.
C. After the British victory, imperial ocials’ attempts to prevent colonists from
moving westward generated colonial opposition, while native groups sought
to both continue trading with Europeans and resist the encroachments of
colonists on tribal lands.
II. The desire of many colonists to assert ideals of self-government in the face of renewed
British imperial eorts led to a colonial independence movement and war with Britain.
A. The imperial struggles of the mid-18th century, as well as new British eorts
to collect taxes without direct colonial representation or consent and to assert
imperial authority in the colonies, began to unite the colonists against perceived
and real constraints on their economic activities and political rights.
B. Colonial leaders based their calls for resistance to Britain on arguments about
the rights of British subjects, the rights of the individual, local traditions of self-
rule, and the ideas of the Enlightenment.
C. The eort for American independence was energized by colonial leaders such as
Benjamin Franklin, as well as by popular movements that included the political
activism of laborers, artisans, and women.
D. In the face of economic shortages and the British military occupation of some
regions, men and women mobilized in large numbers to provide nancial and
material support to the Patriot movement.
E. Despite considerable loyalist opposition, as well as Great Britains apparently
overwhelming military and nancial advantages, the Patriot cause succeeded
because of the actions of colonial militias and the Continental Army, George
Washington’s military leadership, the colonists’ ideological commitment and
resilience, and assistance sent by European allies.
Key Concept 3.2 — The American Revolution’s democratic and republican
ideals inspired new experiments with dierent forms of government.
I. The ideals that inspired the revolutionary cause reected new beliefs about politics,
religion, and society that had been developing over the course of the 18th century.
A. Enlightenment ideas and philosophy inspired many American political
thinkers to emphasize individual talent over hereditary privilege, while religion
strengthened Americans’ view of themselves as a people blessed with liberty.
B. The colonists’ belief in the superiority of republican forms of government based
on the natural rights of the people found expression in Thomas Paine’s Common
Sense and the Declaration of Independence. The ideas in these documents
resonated throughout American history, shaping Americans’ understanding of
the ideals on which the nation was based.
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Period 3: c. 1754–c. 1800
C. During and after the American Revolution, an increased awareness of inequalities
in society motivated some individuals and groups to call for the abolition of
slavery and greater political democracy in the new state and national governments.
D. In response to womens participation in the American Revolution, Enlightenment
ideas, and womens appeals for expanded roles, an ideal of “republican motherhood”
gained popularity. It called on women to teach republican values within the family
and granted women a new importance in American political culture.
E. The American Revolution and the ideals set forth in the Declaration of
Independence reverberated in France, Haiti, and Latin America, inspiring future
independence movements.
II. After declaring independence, American political leaders created new constitutions
and declarations of rights that articulated the role of the state and federal
governments while protecting individual liberties and limiting both centralized
power and excessive popular inuence.
A. Many new state constitutions placed power in the hands of the legislative
branch and maintained property qualications for voting and citizenship.
B. The Articles of Confederation unied the newly independent states, creating a
central government with limited power. After the Revolution, diculties over
international trade, nances, interstate commerce, foreign relations, and internal
unrest led to calls for a stronger central government.
C. Delegates from the states participated in the Constitutional Convention and
through negotiation, collaboration, and compromise proposed a constitution that
created a limited but dynamic central government embodying federalism and
providing for a separation of powers between its three branches.
D. The Constitutional Convention compromised over the representation of slave states
in Congress and the role of the federal government in regulating both slavery and
the slave trade, allowing the prohibition of the international slave trade after 1808.
E. In the debate over ratifying the Constitution, Anti-Federalists opposing
ratication battled with Federalists, whose principles were articulated in the
Federalist Papers (primarily written by Alexander Hamilton and James Madison).
Federalists ensured the ratication of the Constitution by promising the addition
of a Bill of Rights that enumerated individual rights and explicitly restricted
the powers of the federal government.
III. New forms of national culture and political institutions developed in the United
States alongside continued regional variations and dierences over economic,
political, social, and foreign policy issues.
A. During the presidential administrations of George Washington and John Adams,
political leaders created institutions and precedents that put the principles of
the Constitution into practice.
B. Political leaders in the 1790s took a variety of positions on issues such as
the relationship between the national government and the states, economic
policy, foreign policy, and the balance between liberty and order. This led to
the formation of political parties—most signicantly the Federalists, led by
Alexander Hamilton, and the Democratic-Republican Party, led by Thomas
Jeerson and James Madison.
C. The expansion of slavery in the deep South and adjacent western lands and
rising antislavery sentiment began to create distinctive regional attitudes
toward the institution.
D. Ideas about national identity increasingly found expression in works of art,
literature, and architecture.
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Period 3: c. 1754–c. 1800
Key Concept 3.3 — Migration within North America and competition
over resources, boundaries, and trade intensied conicts among peoples
and nations.
I. In the decades after American independence, interactions among dierent groups
resulted in competition for resources, shifting alliances, and cultural blending.
A. Various American Indian groups repeatedly evaluated and adjusted their
alliances with Europeans, other tribes, and the United States, seeking to limit
migration of white settlers and maintain control of tribal lands and natural
resources. British alliances with American Indians contributed to tensions
between the United States and Britain.
B. As increasing numbers of migrants from North America and other parts of the
world continued to move westward, frontier cultures that had emerged in the
colonial period continued to grow, fueling social, political, and ethnic tensions.
C. As settlers moved westward during the 1780s, Congress enacted the Northwest
Ordinance for admitting new states; the ordinance promoted public education,
the protection of private property, and a ban on slavery in the Northwest
Territory.
D. An ambiguous relationship between the federal government and American
Indian tribes contributed to problems regarding treaties and American Indian
legal claims relating to the seizure of their lands.
E. The Spanish, supported by the bonded labor of the local American Indians,
expanded their mission settlements into California; these provided opportunities
for social mobility among soldiers and led to new cultural blending.
II. The continued presence of European powers in North America challenged the
United States to nd ways to safeguard its borders, maintain neutral trading rights,
and promote its economic interests.
A. The U.S. government forged diplomatic initiatives aimed at dealing with the
continued British and Spanish presence in North America, as U.S. settlers
migrated beyond the Appalachians and sought free navigation of the Mississippi
River.
B. War between France and Britain resulting from the French Revolution presented
challenges to the United States over issues of free trade and foreign policy and
fostered political disagreement.
C. George Washingtons Farewell Address encouraged national unity, as he
cautioned against political factions and warned about the danger of permanent
foreign alliances.
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Period 3: c. 1754–c. 1800
Key Concept 4.1 — The United States began to develop a modern democracy
and celebrated a new national culture, while Americans sought to dene
the nation’s democratic ideals and change their society and institutions to
match them.
I. The nations transition to a more participatory democracy was achieved by
expanding surage from a system based on property ownership to one based
on voting by all adult white men, and it was accompanied by the growth of
political parties.
A. In the early 1800s, national political parties continued to debate issues such
as the tari, powers of the federal government, and relations with European
powers.
B. Supreme Court decisions established the primacy of the judiciary in determining
the meaning of the Constitution and asserted that federal laws took precedence
over state laws.
C. By the 1820s and 1830s, new political parties arose—the Democrats, led by
Andrew Jackson, and the Whigs, led by Henry Clay—that disagreed about
the role and powers of the federal government and issues such as the national
bank, taris, and federally funded internal improvements.
D. Regional interests often trumped national concerns as the basis for many
political leaders’ positions on slavery and economic policy.
II. While Americans embraced a new national culture, various groups developed
distinctive cultures of their own.
A. The rise of democratic and individualistic beliefs, a response to rationalism,
and changes to society caused by the market revolution, along with greater
social and geographical mobility, contributed to a Second Great Awakening
among Protestants that inuenced moral and social reforms and inspired
utopian and other religious movements.
B. A new national culture emerged that combined American elements, European
inuences, and regional cultural sensibilities.
C. Liberal social ideas from abroad and Romantic beliefs in human perfectibility
inuenced literature, art, philosophy, and architecture.
D. Enslaved blacks and free African Americans created communities and strategies
to protect their dignity and family structures, and they joined political eorts
aimed at changing their status.
III. Increasing numbers of Americans, many inspired by new religious and
intellectual movements, worked primarily outside of government institutions
to advance their ideals.
A. Americans formed new voluntary organizations that aimed to change
individual behaviors and improve society through temperance and other
reform eorts.
B. Abolitionist and antislavery movements gradually achieved emancipation in
the North, contributing to the growth of the free African American population,
even as many state governments restricted African Americans’ rights.
Antislavery eorts in the South were largely limited to unsuccessful rebellions
by enslaved persons.
C. A women’s rights movement sought to create greater equality and opportunities
for women, expressing its ideals at the Seneca Falls Convention.
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Period 4: c. 1800–c. 1848
Key Concept 4.2 — Innovations in technology, agriculture, and commerce
powerfully accelerated the American economy, precipitating profound changes
to U.S. society and to national and regional identities.
I. New transportation systems and technologies dramatically expanded manufacturing
and agricultural production.
A. Entrepreneurs helped to create a market revolution in production and commerce,
in which market relationships between producers and consumers came to
prevail as the manufacture of goods became more organized.
B. Innovations including textile machinery, steam engines, interchangeable parts,
the telegraph, and agricultural inventions increased the eciency of production
methods.
C. Legislation and judicial systems supported the development of roads, canals,
and railroads, which extended and enlarged markets and helped foster regional
interdependence. Transportation networks linked the North and Midwest more
closely than they linked regions in the South.
II. The changes caused by the market revolution had signicant eects on U.S. society,
workers’ lives, and gender and family relations.
A. Increasing numbers of Americans, especially women and men working
in factories, no longer relied on semisubsistence agriculture; instead they
supported themselves producing goods for distant markets.
B. The growth of manufacturing drove a signicant increase in prosperity and
standards of living for some; this led to the emergence of a larger middle
class and a small but wealthy business elite but also to a large and growing
population of laboring poor.
C. Gender and family roles changed in response to the market revolution,
particularly with the growth of denitions of domestic ideals that emphasized
the separation of public and private spheres.
III. Economic development shaped settlement and trade patterns, helping to unify the
nation while also encouraging the growth of dierent regions.
A. Large numbers of international migrants moved to industrializing northern
cities, while many Americans moved west of the Appalachians, developing
thriving new communities along the Ohio and Mississippi rivers.
B. Increasing Southern cotton production and the related growth of Northern
manufacturing, banking, and shipping industries promoted the development
of national and international commercial ties.
C. Southern business leaders continued to rely on the production and export
of traditional agricultural staples, contributing to the growth of a distinctive
Southern regional identity.
D. Plans to further unify the U.S. economy, such as the American System,
generated debates over whether such policies would benet agriculture or
industry, potentially favoring dierent sections of the country.
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Period 4: c. 1800–c. 1848
Key Concept 4.3 — The U.S. interest in increasing foreign trade and
expanding its national borders shaped the nation’s foreign policy and spurred
government and private initiatives.
I. Struggling to create an independent global presence, the United States sought
to claim territory throughout the North American continent and promote foreign
trade.
A. Following the Louisiana Purchase, the U.S. government sought inuence
and control over North America and the Western Hemisphere through a
variety of means, including exploration, military actions, American Indian
removal, and diplomatic eorts such as the Monroe Doctrine.
B. Frontier settlers tended to champion expansion eorts, while American Indian
resistance led to a sequence of wars and federal eorts to control and relocate
American Indian populations.
II. The United States’ acquisition of lands in the West gave rise to contests over the
extension of slavery into new territories.
A. As overcultivation depleted arable land in the Southeast, slaveholders began
relocating their plantations to more fertile lands west of the Appalachians,
where the institution of slavery continued to grow.
B. Antislavery eorts increased in the North, while in the South, although the
majority of Southerners owned no enslaved persons, most leaders argued that
slavery was part of the Southern way of life.
C. Congressional attempts at political compromise, such as the Missouri
Compromise, only temporarily stemmed growing tensions between opponents
and defenders of slavery.
© 2019 College BoardAP U.S. History Concept Outline
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Period 4: c. 1800–c. 1848
Key Concept 5.1 — The United States became more connected with the
world, pursued an expansionist foreign policy in the Western Hemisphere,
and emerged as the destination for many migrants from other countries.
I. Popular enthusiasm for U.S. expansion, bolstered by economic and security
interests, resulted in the acquisition of new territories, substantial migration
westward, and new overseas initiatives.
A. The desire for access to natural and mineral resources and the hope of many
settlers for economic opportunities or religious refuge led to an increased
migration to and settlement in the West.
B. Advocates of annexing western lands argued that Manifest Destiny and the
superiority of American institutions compelled the United States to expand its
borders westward to the Pacic Ocean.
C. The United States added large territories in the West through victory in the
Mexican–American War and diplomatic negotiations, raising questions about
the status of slavery, American Indians, and Mexicans in the newly acquired
lands.
D. Westward migration was boosted during and after the Civil War by the passage
of new legislation promoting western transportation and economic development.
E. U.S. interest in expanding trade led to economic, diplomatic, and cultural
initiatives to create more ties with Asia.
II. In the 1840s and 1850s, Americans continued to debate questions about rights
and citizenship for various groups of U.S. inhabitants.
A. Substantial numbers of international migrants continued to arrive in the United
States from Europe and Asia, mainly from Ireland and Germany, often settling in
ethnic communities where they could preserve elements of their languages and
customs.
B. A strongly anti-Catholic nativist movement arose that was aimed at limiting
new immigrants’ political power and cultural inuence.
C. U.S. government interaction and conict with Mexican Americans and American
Indians increased in regions newly taken from American Indians and Mexico,
altering these groups’ economic self-suciency and cultures.
Key Concept 5.2 — Intensied by expansion and deepening regional
divisions, debates over slavery and other economic, cultural, and political
issues led the nation into civil war.
I. Ideological and economic dierences over slavery produced an array of diverging
responses from Americans in the North and the South.
A. The Norths expanding manufacturing economy relied on free labor in contrast
to the Southern economy’s dependence on enslaved labor. Some Northerners
did not object to slavery on principle but claimed that slavery would undermine
the free-labor market. As a result, a free-soil movement arose that portrayed the
expansion of slavery as incompatible with free labor.
B. African American and white abolitionists, although a minority in the North,
mounted a highly visible campaign against slavery, presenting moral arguments
against the institution, assisting escapes, and sometimes expressing a
willingness to use violence to achieve their goals.
C. Defenders of slavery based their arguments on racial doctrines, the view that
slavery was a positive social good, and the belief that slavery and states’ rights
were protected by the Constitution.
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Period 5: c. 1844–c. 1877
II. Debates over slavery came to dominate political discussion in the 1850s,
culminating in the bitter election of 1860 and the secession of Southern states.
A. The Mexican Cession led to heated controversies over whether to allow slavery
in the newly acquired territories.
B. The courts and national leaders made a variety of attempts to resolve the issue of
slavery in the territories, including the Compromise of 1850, the Kansas–Nebraska
Act, and the Dred Scott decision, but these ultimately failed to reduce conict.
C. The Second Party System ended when the issues of slavery and anti-immigrant
nativism weakened loyalties to the two major parties and fostered the emergence
of sectional parties, most notably the Republican Party in the North.
D. Abraham Lincoln’s victory on the Republicans’ free-soil platform in the
presidential election of 1860 was accomplished without any Southern electoral
votes. After a series of contested debates about secession, most slave states
voted to secede from the Union, precipitating the Civil War.
Key Concept 5.3 — The Union victory in the Civil War and the contested
reconstruction of the South settled the issues of slavery and secession, but
left unresolved many questions about the power of the federal government
and citizenship rights.
I. The Norths greater manpower and industrial resources, the leadership of Abraham
Lincoln and others, and the decision to emancipate enslaved persons eventually led
to the Union military victory over the Confederacy in the devastating Civil War.
A. Both the Union and the Confederacy mobilized their economies and societies to
wage the war even while facing considerable home front opposition.
B. Lincoln and most Union supporters began the Civil War to preserve the Union, but
Lincolns decision to issue the Emancipation Proclamation reframed the purpose of
the war and helped prevent the Confederacy from gaining full diplomatic support
from European powers. Many African Americans ed southern plantations and
enlisted in the Union Army, helping to undermine the Confederacy.
C. Lincoln sought to reunify the country and used speeches such as the Gettysburg
Address to portray the struggle against slavery as the fulllment of America’s
founding democratic ideals.
D. Although the Confederacy showed military initiative and daring early in the war,
the Union ultimately succeeded due to improvements in leadership and strategy,
key victories, greater resources, and the wartime destruction of the South’s
infrastructure.
II. Reconstruction and the Civil War ended slavery, altered relationships between
the states and the federal government, and led to debates over new denitions of
citizenship, particularly regarding the rights of African Americans, women, and
other minorities.
A. The 13th Amendment abolished slavery, while the 14th and 15th amendments
granted African Americans citizenship, equal protection under the laws, and
voting rights.
B. The womens rights movement was both emboldened and divided over the
14th and 15th amendments to the Constitution.
C. Eorts by radical and moderate Republicans to change the balance of power
between Congress and the presidency and to reorder race relations in the
defeated South yielded some short-term successes. Reconstruction opened up
political opportunities and other leadership roles to formerly enslaved persons,
but it ultimately failed, due both to determined Southern resistance and the
Norths waning resolve.
© 2019 College BoardAP U.S. History Concept Outline
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Period 5: c. 1844–c. 1877
D. Southern plantation owners continued to own the majority of the regions land
even after Reconstruction. Formerly enslaved persons sought land ownership
but generally fell short of self-suciency, as an exploitative and soil-intensive
sharecropping system limited blacks’ and poor whites’ access to land in the
South.
E. Segregation, violence, Supreme Court decisions, and local political tactics
progressively stripped away African American rights, but the 14th and
15th amendments eventually became the basis for court decisions upholding
civil rights in the 20th century.
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Period 5: c. 1844–c. 1877
Key Concept 6.1 — Technological advances, large-scale production methods,
and the opening of new markets encouraged the rise of industrial capitalism
in the United States.
I. Large-scale industrial production—accompanied by massive technological
change, expanding international communication networks, and pro-growth
government policies—generated rapid economic development and business
consolidation.
A. Following the Civil War, government subsidies for transportation and
communication systems helped open new markets in North America.
B. Businesses made use of technological innovations, greater access to natural
resources, redesigned nancial and management structures, advances in
marketing, and a growing labor force to dramatically increase the production
of goods.
C. As the price of many goods decreased, workers’ real wages increased, providing
new access to a variety of goods and services; many Americans’ standards of
living improved, while the gap between rich and poor grew.
D. Many business leaders sought increased prots by consolidating
corporations into large trusts and holding companies, which further
concentrated wealth.
E. Businesses and foreign policymakers increasingly looked outside U.S. borders
in an eort to gain greater inuence and control over markets and natural
resources in the Pacic Rim, Asia, and Latin America.
II. A variety of perspectives on the economy and labor developed during a time of
nancial panics and downturns.
A. Some argued that laissez-faire policies and competition promoted economic
growth in the long run, and they opposed government intervention during
economic downturns.
B. The industrial workforce expanded and became more diverse through internal
and international migration; child labor also increased.
C. Labor and management battled over wages and working conditions, with
workers organizing local and national unions and/or directly confronting
business leaders.
D. Despite the industrialization of some segments of the Southern
economy—a change promoted by Southern leaders who called for a
“NewSouth”—agriculture based on sharecropping and tenant farming
continued to be the primary economic activity in the South.
III. New systems of production and transportation enabled consolidation within
agriculture, which, along with periods of instability, spurred a variety of responses
from farmers.
A. Improvements in mechanization helped agricultural production increase
substantially and contributed to declines in food prices.
B. Many farmers responded to the increasing consolidation in agricultural markets
and their dependence on the evolving railroad system by creating local and
regional cooperative organizations.
C. Economic instability inspired agrarian activists to create the Peoples (Populist)
Party, which called for a stronger governmental role in regulating the American
economic system.
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Period 6: c. 1865–c. 1898
Key Concept 6.2 — The migrations that accompanied industrialization
transformed both urban and rural areas of the United States and caused
dramatic social and cultural change.
I. International and internal migration increased urban populations and fostered the
growth of a new urban culture.
A. As cities became areas of economic growth featuring new factories and
businesses, they attracted immigrants from Asia and from southern and eastern
Europe, as well as African American migrants within and out of the South.
Many migrants moved to escape poverty, religious persecution, and limited
opportunities for social mobility in their home countries or regions.
B. Urban neighborhoods based on particular ethnicities, races, and classes
provided new cultural opportunities for city dwellers.
C. Increasing public debates over assimilation and Americanization accompanied
the growth of international migration. Many immigrants negotiated compromises
between the cultures they brought and the culture they found in the United States.
D. In an urban atmosphere where the access to power was unequally distributed,
political machines thrived, in part by providing immigrants and the poor with
social services.
E. Corporations’ need for managers and for male and female clerical workers as
well as increased access to educational institutions, fostered the growth of a
distinctive middle class. A growing amount of leisure time also helped expand
consumer culture.
II. Larger numbers of migrants moved to the West in search of land and economic
opportunity, frequently provoking competition and violent conict.
A. The building of transcontinental railroads, the discovery of mineral resources,
and government policies promoted economic growth and created new
communities and centers of commercial activity.
B. In hopes of achieving ideals of self-suciency and independence, migrants
moved to both rural and boomtown areas of the West for opportunities, such as
building the railroads, mining, farming, and ranching.
C. As migrant populations increased in number and the American bison population
was decimated, competition for land and resources in the West among white
settlers, American Indians, and Mexican Americans led to an increase in violent
conict.
D. The U.S. government violated treaties with American Indians and responded
to resistance with military force, eventually conning American Indians to
reservations and denying tribal sovereignty.
E. Many American Indians preserved their cultures and tribal identities despite
government policies promoting assimilation, and they attempted to develop
self-sustaining economic practices.
Key Concept 6.3 — The Gilded Age produced new cultural and intellectual
movements, public reform eorts, and political debates over economic and
social policies.
I. New cultural and intellectual movements both buttressed and challenged the social
order of the Gilded Age.
A. Social commentators advocated theories later described as Social Darwinism
to justify the success of those at the top of the socioeconomic structure as
both appropriate and inevitable.
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Period 6: c. 1865–c. 1898
B. Some business leaders argued that the wealthy had a moral obligation to help
the less fortunate and improve society, as articulated in the idea known as the
Gospel of Wealth, and they made philanthropic contributions that enhanced
educational opportunities and urban environments.
C. A number of artists and critics, including agrarians, utopians, socialists, and
advocates of the Social Gospel, championed alternative visions for the economy
and U.S. society.
II. Dramatic social changes in the period inspired political debates over citizenship,
corruption, and the proper relationship between business and government.
A. The major political parties appealed to lingering divisions from the Civil War
and contended over taris and currency issues, even as reformers argued that
economic greed and self-interest had corrupted all levels of government.
B. Many women sought greater equality with men, often joining voluntary
organizations, going to college, promoting social and political reform, and,
like Jane Addams, working in settlement houses to help immigrants adapt
to U.S. language and customs.
C. The Supreme Court decision in Plessy v. Ferguson that upheld racial
segregation helped to mark the end of most of the political gains African
Americans made during Reconstruction. Facing increased violence,
discrimination, and scientic theories of race, African American reformers
continued to ght for political and social equality.
© 2019 College BoardAP U.S. History Concept Outline
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Period 6: c. 1865–c. 1898
Key Concept 7.1 — Growth expanded opportunity, while economic instability
led to new eorts to reform U.S. society and its economic system.
I. The United States continued its transition from a rural, agricultural economy to an
urban, industrial economy led by large companies.
A. New technologies and manufacturing techniques helped focus the U.S.
economy on the production of consumer goods, contributing to improved
standards of living, greater personal mobility, and better communications
systems.
B. By 1920, a majority of the U.S. population lived in urban centers, which
oered new economic opportunities for women, international migrants, and
internal migrants.
C. Episodes of credit and market instability in the early 20th century, in
particular the Great Depression, led to calls for a stronger nancial regulatory
system.
II. In the Progressive Era of the early 20th century, Progressives responded to
political corruption, economic instability, and social concerns by calling for greater
government action and other political and social measures.
A. Some Progressive Era journalists attacked what they saw as political
corruption, social injustice, and economic inequality, while reformers, often
from the middle and upper classes and including many women, worked to
eect social changes in cities and among immigrant populations.
B. On the national level, Progressives sought federal legislation that they believed
would eectively regulate the economy, expand democracy, and generate moral
reform. Progressive amendments to the Constitution dealt with issues such as
prohibition and woman surage.
C. Preservationists and conservationists both supported the establishment of
national parks while advocating dierent government responses to the overuse
of natural resources.
D. The Progressives were divided over many issues. Some Progressives
supported Southern segregation, while others ignored its presence. Some
Progressives advocated expanding popular participation in government,
while others called for greater reliance on professional and technical experts
to make government more ecient. Progressives also disagreed about
immigration restriction.
III. During the 1930s, policymakers responded to the mass unemployment and social
upheavals of the Great Depression by transforming the U.S. into a limited welfare
state, redening the goals and ideas of modern American liberalism.
A. Franklin Roosevelt’s New Deal attempted to end the Great Depression by using
government power to provide relief to the poor, stimulate recovery, and reform
the American economy.
B. Radical, union, and populist movements pushed Roosevelt toward
more extensive eorts to change the American economic system, while
conservatives in Congress and the Supreme Court sought to limit the
New Deal’s scope.
C. Although the New Deal did not end the Depression, it left a legacy of reforms
and regulatory agencies and fostered a long-term political realignment in which
many ethnic groups, African Americans, and working-class communities
identied with the Democratic Party.
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Period 7: c. 1890–c. 1945
Key Concept 7.2 — Innovations in communications and technology
contributed to the growth of mass culture, while signicant changes occurred
in internal and international migration patterns.
I. Popular culture grew in inuence in U.S. society, even as debates increased over the
eects of culture on public values, morals, and American national identity.
A. New forms of mass media, such as radio and cinema, contributed to the spread
of national culture as well as greater awareness of regional cultures.
B. Migration gave rise to new forms of art and literature that expressed ethnic and
regional identities, such the Harlem Renaissance movement.
C. Ocial restrictions on freedom of speech grew during World War I, as increased
anxiety about radicalism led to a Red Scare and attacks on labor activism and
immigrant culture.
D. In the 1920s, cultural and political controversies emerged as Americans debated
gender roles, modernism, science, religion, and issues related to race and
immigration.
II. Economic pressures, global events, and political developments caused sharp
variations in the numbers, sources, and experiences of both international and
internal migrants.
A. Immigration from Europe reached its peak in the years before World War I.
During and after World War I, nativist campaigns against some ethnic groups
led to the passage of quotas that restricted immigration, particularly from
southern and eastern Europe, and increased barriers to Asian immigration.
B. The increased demand for war production and labor during World War I and
World War II and the economic diculties of the 1930s led many Americans to
migrate to urban centers in search of economic opportunities.
C. In the Great Migration during and after World War I, African Americans
escaping segregation, racial violence, and limited economic opportunity in the
South moved to the North and West, where they found new opportunities but
still encountered discrimination.
D. Migration to the United States from Mexico and elsewhere in the Western
Hemisphere increased, in spite of contradictory government policies toward
Mexican immigration.
Key Concept 7.3 — Participation in a series of global conicts propelled the
United States into a position of international power while renewing domestic
debates over the nations proper role in the world.
I. In the late 19th century and early 20th century, new U.S. territorial ambitions and
acquisitions in the Western Hemisphere and the Pacic accompanied heightened
public debates over America’s role in the world.
A. Imperialists cited economic opportunities, racial theories, competition with
European empires, and the perception in the 1890s that the western frontier
was “closed” to argue that Americans were destined to expand their culture and
institutions to peoples around the globe.
B. Anti-imperialists cited principles of self-determination and invoked both racial
theories and the U.S. foreign policy tradition of isolationism to argue that the
United States should not extend its territory overseas.
C. The American victory in the Spanish–American War led to the U.S. acquisition
of island territories in the Caribbean and the Pacic, an increase in involvement
in Asia, and the suppression of a nationalist movement in the Philippines.
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Period 7: c. 1890–c. 1945
II. World War I and its aftermath intensied ongoing debates about the nation’s
role in the world and how best to achieve national security and pursue American
interests.
A. After initial neutrality in World War I, the nation entered the conict,
departing from the U.S. foreign policy tradition of noninvolvement in European
aairs, in response to Woodrow Wilson’s call for the defense of humanitarian
and democratic principles.
B. Although the American Expeditionary Forces played a relatively limited role in
combat, the United States’ entry helped to tip the balance of the conict in favor
of the Allies.
C. Despite Wilsons deep involvement in postwar negotiations, the U.S. Senate
refused to ratify the Treaty of Versailles or join the League of Nations.
D. In the years following World War I, the United States pursued a unilateral foreign
policy that used international investment, peace treaties, and select military
intervention to promote a vision of international order, even while maintaining
U.S. isolationism.
E. In the 1930s, while many Americans were concerned about the rise of fascism
and totalitarianism, most opposed taking military action against the aggression
of Nazi Germany and Japan until the Japanese attack on Pearl Harbor drew the
United States into World War II.
III. U.S. participation in World War II transformed American society, while the
victory of the United States and its allies over the Axis powers vaulted the U.S.
into a position of global, political, and military leadership.
A. Americans viewed the war as a ght for the survival of freedom and democracy
against fascist and militarist ideologies. This perspective was later reinforced by
revelations about Japanese wartime atrocities, Nazi concentration camps, and
the Holocaust.
B. The mass mobilization of American society helped end the Great Depression,
and the country’s strong industrial base played a pivotal role in winning the
war by equipping and provisioning allies and millions of U.S. troops.
C. Mobilization and military service provided opportunities for women and
minorities to improve their socioeconomic positions for the war’s duration,
while also leading to debates over racial segregation. Wartime experiences
also generated challenges to civil liberties, such as the internment of
Japanese Americans.
D. The United States and its allies achieved military victory through Allied
cooperation, technological and scientic advances, the contributions of
servicemen and women, and campaigns such as Pacic “island-hopping” and
the D-Day invasion. The use of atomic bombs hastened the end of the war and
sparked debates about the morality of using atomic weapons.
E. The war-ravaged condition of Asia and Europe, and the dominant U.S. role in
the Allied victory and postwar peace settlements, allowed the United States
to emerge from the war as the most powerful nation on Earth.
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Period 7: c. 1890–c. 1945
Key Concept 8.1 — The United States responded to an uncertain and unstable
postwar world by asserting and working to maintain a position of global
leadership, with far-reaching domestic and international consequences.
I. United States policymakers engaged in a cold war with the authoritarian Soviet Union,
seeking to limit the growth of Communist military power and ideological inuence,
create a free-market global economy, and build an international security system.
A. As postwar tensions dissolved the wartime alliance between Western
democracies and the Soviet Union, the United States developed a foreign policy
based on collective security, international aid, and economic institutions that
bolstered non-Communist nations.
B. Concerned by expansionist Communist ideology and Soviet repression, the
United States sought to contain communism through a variety of measures,
including major military engagements in Korea and Vietnam.
C. The Cold War uctuated between periods of direct and indirect military
confrontation and periods of mutual coexistence (or détente).
D. Postwar decolonization and the emergence of powerful nationalist movements
in Asia, Africa, and the Middle East led both sides in the Cold War to seek allies
among new nations, many of which remained nonaligned.
E. Cold War competition extended to Latin America, where the United States supported
non-Communist regimes that had varying levels of commitment to democracy.
II. Cold War policies led to public debates over the power of the federal government
and acceptable means for pursuing international and domestic goals while
protecting civil liberties.
A. Americans debated policies and methods designed to expose suspected
communists within the United States even as both parties supported the broader
strategy of containing communism.
B. Although anticommunist foreign policy faced little domestic opposition in
previous years, the Vietnam War inspired sizable and passionate antiwar protests
that became more numerous as the war escalated and sometimes led to violence.
C. Americans debated the merits of a large nuclear arsenal, the military-industrial
complex, and the appropriate power of the executive branch in conducting
foreign and military policy.
D. Ideological, military, and economic concerns shaped U.S. involvement in the
Middle East, with several oil crises in the region eventually sparking attempts at
creating a national energy policy.
Key Concept 8.2 — New movements for civil rights and liberal eorts to expand
the role of government generated a range of political and cultural responses.
I. Seeking to fulll Reconstruction-era promises, civil rights activists and political
leaders achieved some legal and political successes in ending segregation, although
progress toward racial equality was slow.
A. During and after World War II, civil rights activists and leaders, most notably
Martin Luther King Jr., combatted racial discrimination utilizing a variety of
strategies, including legal challenges, direct action, and nonviolent protest tactics.
B. The three branches of the federal government used measures including
desegregation of the armed services, Brown v. Board of Education, and the
Civil Rights Act of 1964 to promote greater racial equality.
C. Continuing resistance slowed eorts at desegregation, sparking social and
political unrest across the nation. Debates among civil rights activists over the
ecacy of nonviolence increased after 1965.
© 2019 College BoardAP U.S. History Concept Outline
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Period 8: c. 1945–c. 1980
II. Responding to social conditions and the African American civil rights movement,
a variety of movements emerged that focused on issues of identity, social justice,
and the environment.
A. Feminist and gay and lesbian activists mobilized behind claims for legal,
economic, and social equality.
B. Latino, American Indian, and Asian American movements continued to demand
social and economic equality and a redress of past injustices.
C. Despite an overall auence in postwar America, advocates raised concerns
about the prevalence and persistence of poverty as a national problem.
D. Environmental problems and accidents led to a growing environmental
movement that aimed to use legislative and public eorts to combat pollution
and protect natural resources. The federal government established new
environmental programs and regulations.
III. Liberalism inuenced postwar politics and court decisions, but it came under
increasing attack from the left as well as from a resurgent conservative movement.
A. Liberalism, based on anticommunism abroad and a rm belief in the ecacy
of government power to achieve social goals at home, reached a high point of
political inuence by the mid-1960s.
B. Liberal ideas found expression in Lyndon Johnsons Great Society, which
attempted to use federal legislation and programs to end racial discrimination,
eliminate poverty, and address other social issues. A series of Supreme Court
decisions expanded civil rights and individual liberties.
C. In the 1960s, conservatives challenged liberal laws and court decisions and
perceived moral and cultural decline, seeking to limit the role of the federal
government and enact more assertive foreign policies.
D. Some groups on the left also rejected liberal policies, arguing that political
leaders did too little to transform the racial and economic status quo at home
and pursued immoral policies abroad.
E. Public condence and trust in government’s ability to solve social and economic
problems declined in the 1970s in the wake of economic challenges, political
scandals, and foreign policy crises.
F. The 1970s saw growing clashes between conservatives and liberals over social
and cultural issues, the power of the federal government, race, and movements
for greater individual rights.
Key Concept 8.3 — Postwar economic and demographic changes had
far-reaching consequences for American society, politics, and culture.
I. Rapid economic and social changes in American society fostered a sense of
optimism in the postwar years.
A. A burgeoning private sector, federal spending, the baby boom, and technological
developments helped spur economic growth.
B. As higher education opportunities and new technologies rapidly expanded,
increasing social mobility encouraged the migration of the middle class to the
suburbs and of many Americans to the South and West. The Sun Belt region
emerged as a signicant political and economic force.
C. Immigrants from around the world sought access to the political, social, and
economic opportunities in the United States, especially after the passage of
new immigration laws in 1965.
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Period 8: c. 1945–c. 1980
II. New demographic and social developments, along with anxieties over the Cold War,
changed U.S. culture and led to signicant political and moral debates that sharply
divided the nation.
A. Mass culture became increasingly homogeneous in the postwar years, inspiring
challenges to conformity by artists, intellectuals, and rebellious youth.
B. Feminists and young people who participated in the counterculture of the 1960s
rejected many of the social, economic, and political values of their parents
generation, introduced greater informality into U.S. culture, and advocated
changes in sexualnorms.
C. The rapid and substantial growth of evangelical Christian churches and
organizations was accompanied by greater political and social activism on the
part of religious conservatives.
© 2019 College BoardAP U.S. History Concept Outline
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Period 8: c. 1945–c. 1980
Key Concept 9.1 — A newly ascendant conservative movement achieved
several political and policy goals during the 1980s and continued to strongly
inuence public discourse in the following decades.
I. Conservative beliefs regarding the need for traditional social values and a reduced
role for government advanced in U.S. politics after 1980.
A. Ronald Reagans victory in the presidential election of 1980 represented an
important milestone, allowing conservatives to enact signicant tax cuts and
continue the deregulation of many industries.
B. Conservatives argued that liberal programs were counterproductive in ghting
poverty and stimulating economic growth. Some of their eorts to reduce the
size and scope of government met with inertia and liberal opposition, as many
programs remained popular with voters.
C. Policy debates continued over free-trade agreements, the scope of the
government social safety net, and calls to reform the U.S. nancial system.
Key Concept 9.2 — Moving into the 21st century, the nation experienced
signicant technological, economic, and demographic changes.
I. New developments in science and technology enhanced the economy and
transformed society, while manufacturing decreased.
A. Economic productivity increased as improvements in digital
communications enabled increased American participation in worldwide
economic opportunities.
B. Technological innovations in computing, digital mobile technology, and the
Internet transformed daily life, increased access to information, and led to
new social behaviors and networks.
C. Employment increased in service sectors and decreased in manufacturing, and
union membership declined.
D. Real wages stagnated for the working and middle class amid growing economic
inequality.
II. The U.S. population continued to undergo demographic shifts that had signicant
cultural and political consequences.
A. After 1980, the political, economic, and cultural inuence of the American South
and West continued to increase as population shifted to those areas.
B. International migration from Latin America and Asia increased dramatically.
The new immigrants aected U.S. culture in many ways and supplied the
economy with an important labor force.
C. Intense political and cultural debates continued over issues such as immigration
policy, diversity, gender roles, and family structures.
Key Concept 9.3 — The end of the Cold War and new challenges to
U.S. leadership forced the nation to redene its foreign policy and role in
the world.
I. The Reagan administration promoted an interventionist foreign policy that
continued in later administrations, even after the end of the Cold War.
A. Reagan asserted U.S. opposition to communism through speeches, diplomatic
eorts, limited military interventions, and a buildup of nuclear and conventional
weapons.
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Period 9: c. 1980–PRESENT
B. Increased U.S. military spending, Reagans diplomatic initiatives, and political
changes and economic problems in Eastern Europe and the Soviet Union were
all important in ending the Cold War.
C. The end of the Cold War led to new diplomatic relationships but also new
U.S. military and peacekeeping interventions, as well as continued debates over
the appropriate use of American power in the world.
II. Following the attacks of September 11, 2001, U.S. foreign policy eorts focused on
ghting terrorism around the world.
A. In the wake of attacks on the World Trade Center and the Pentagon, the United
States launched military eorts against terrorism and lengthy, controversial
conicts in Afghanistan and Iraq.
B. The war on terrorism sought to improve security within the United States but
also raised questions about the protection of civil liberties and human rights.
C. Conicts in the Middle East and concerns about climate change led to debates
over U.S. dependence on fossil fuels and the impact of economic consumption
on the environment.
D. Despite economic and foreign policy challenges, the United States continued
as the world’s leading superpower in the 21st century.
© 2019 College BoardAP U.S. History Concept Outline
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Period 9: c. 1980–PRESENT