Westward Expansion after the Civil War

Syllabus

6.1 Contextualizing Period 6

Learning Objective	Preview: Unit 6 Key Concepts
Unit 6.A Explain the historical context for the rise of industrial capitalism in the United States.	KC-6.1 Technological advances, large-scale production methods, and the opening of new markets encouraged the rise of industrial capitalism in the United States. KC-6.1.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. KC-6.1.II A variety of perspectives on the economy and labor developed during a time of financial panics and downturns. KC-6.1.III New systems of production and transportation enabled consolidation within agriculture, which, along with periods of instability, spurred a variety of responses from farmers. KC-6.2 The migrations that accompanied industrialization transformed both urban and rural areas of the United States and caused dramatic social and cultural change. KC-6.2.I International and internal migration increased urban populations and fostered the growth of a new urban culture. KC-6.2.II Larger numbers of migrants moved to the West in search of land and economic opportunity, frequently provoking competition and violent conflict. KC-6.3 The Gilded Age produced new cultural and intellectual movements, public reform efforts, and political debates over economic and social policies. KC-6.3.I New cultural and intellectual movements both buttressed and challenged the social order of the Gilded Age. KC-6.3.II Dramatic social changes in the period inspired political debates over citizenship, corruption, and the proper relationship between business and government.

Learning Objective

Preview: Unit 6 Key Concepts

Unit 6.A
Explain the historical context for the rise of industrial capitalism in the United States.

KC-6.1 Technological advances, large-scale production methods, and the opening of new markets encouraged the rise of industrial capitalism in the United States.
- KC-6.1.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.
- KC-6.1.II A variety of perspectives on the economy and labor developed during a time of financial panics and downturns.
- KC-6.1.III New systems of production and transportation enabled consolidation within agriculture, which, along with periods of instability, spurred a variety of responses from farmers.
KC-6.2 The migrations that accompanied industrialization transformed both urban and rural areas of the United States and caused dramatic social and cultural change.
- KC-6.2.I International and internal migration increased urban populations and fostered the growth of a new urban culture.
- KC-6.2.II Larger numbers of migrants moved to the West in search of land and economic opportunity, frequently provoking competition and violent conflict.
KC-6.3 The Gilded Age produced new cultural and intellectual movements, public reform efforts, and political debates over economic and social policies.
- KC-6.3.I New cultural and intellectual movements both buttressed and challenged the social order of the Gilded Age.
- KC-6.3.II Dramatic social changes in the period inspired political debates over citizenship, corruption, and the proper relationship between business and government.

6.2 Westward Expansion: Economic Development

Thematic Focus	Learning Objective	Historical Developments
MIG Migration and Settlement — Push and pull factors shape immigration to and migration within America, and the demographic change as a result of these moves shapes the migrants, society, and the environment.	Unit 6.B Explain the causes and effects of the settlement of the West from 1877 to 1898.	KC-6.1.III.A Improvements in mechanization helped agricultural production increase substantially and contributed to declines in food prices. KC-6.1.III.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. KC-6.1.I.A Following the Civil War, government subsidies for transportation and communication systems helped open new markets in North America. KC-6.2.II.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.

6.3 Westward Expansion: Social and Cultural Development

Thematic Focus	Learning Objective	Historical Developments
MIG Migration and Settlement — Push and pull factors shape immigration to and migration within America, and the demographic change as a result of these moves shapes the migrants, society, and the environment.	Unit 6.B Explain the causes and effects of the settlement of the West from 1877 to 1898.	KC-6.2.II.B In hopes of achieving ideals of self-sufficiency and independence, migrants moved to both rural and boomtown areas of the West for opportunities, such as building the railroads, mining, farming, and ranching. KC-6.2.II.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 conflict. KC-6.2.II.D The U.S. government violated treaties with American Indians and responded to resistance with military force, eventually confining American Indians to reservations and denying tribal sovereignty. KC-6.2.II.E Many American Indians preserved their cultures and tribal identities despite government policies promoting assimilation, and they attempted to develop self-sustaining economic practices.

Source: College Board AP Course and Exam Description

Period 6 runs from 1865 to 1898 - the Gilded Age 镀金时代. Industry, migration, and the West transform the country, and every transformation produces a political argument about who benefits.

Improvements in mechanization 机械化 raised agricultural production substantially, while railroads carried crops to national and world markets. But the same forces squeezed farmers: consolidation in agricultural markets 农产品市场集中化 left them facing high freight rates, expensive credit, and falling crop prices.

Westward settlement also meant the final dispossession of American Indians. Federal policy moved from treaties to reservations 保留地 and then to assimilation 同化 through the Dawes Act 道斯法, which divided communal land into individual plots and transferred the surplus to settlers.

Vocabulary Train

English	Chinese	Pinyin
Gilded Age	镀金时代	dù jīn shí dài
mechanization	机械化	jī xiè huà
consolidation in agricultural markets	农产品市场集中化	nóng chǎn pǐn shì chǎng jí zhōng huà
reservations	保留地	bǎo liú dì
assimilation	同化	tóng huà
Dawes Act	道斯法	dào sī fǎ

6.4 6.5 6.6

The Rise of Industrial Capitalism

Syllabus

6.4 The “New South”

Thematic Focus	Learning Objective	Historical Developments
NAT American and National Identity — The development of and debates about democracy, freedom, citizenship, diversity, and individualism shape American national identity, cultural values, and beliefs about American exceptionalism, and in turn, these ideas shape political institutions and society. Throughout American history, notions of national identity and culture have coexisted with varying degrees of regional and group identities.	Unit 6.C Explain how various factors contributed to continuity and change in the “New South” from 1877 to 1898.	KC-6.1.II.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. KC-6.3.II.C The Supreme Court decision in Plessy v. Ferguson that upheld racial segregation (known as Jim Crow) helped to mark the end of most of the political gains African Americans made during Reconstruction. Facing increased violence, discrimination, and scientific theories of race, African American reformers continued to fight for political and social equality.

6.5 Technological Innovation

Thematic Focus	Learning Objective	Historical Developments
WXT Work, Exchange, and Technology — The interplay between markets, private enterprise, labor, technology, and government policy shape the American economy. In turn, economic activity shapes society and government policy and drives technological innovation.	Unit 6.D Explain the effects of technological advances in the development of the United States over time.	KC-6.1.I.B.i Businesses made use of technological innovations and greater access to natural resources to dramatically increase the production of goods.

6.6 The Rise of Industrial Capitalism

Thematic Focus	Learning Objective	Historical Developments
WXT Work, Exchange, and Technology — The interplay between markets, private enterprise, labor, technology, and government policy shape the American economy. In turn, economic activity shapes society and government policy and drives technological innovation.	Unit 6.E Explain the socioeconomic continuities and changes associated with the growth of industrial capitalism from 1865 to 1898.	KC-6.1.I Large-scale industrial production— accompanied by massive technological change, expanding international communication networks, pro-growth government policies—generated rapid economic development and business consolidation. KC-6.1.I.B.ii Businesses made use of redesigned financial and management structures, advances in marketing, and a growing labor force to dramatically increase the production of goods. KC-6.1.I.D Many business leaders sought increased profits by consolidating corporations into large trusts and holding companies, which further concentrated wealth. KC-6.1.I.E.i Businesses increasingly looked outside U.S. borders in an effort to gain greater influence and control over markets and natural resources in the Pacific Rim, Asia, and Latin America.

Source: College Board AP Course and Exam Description

Large-scale industrial production, accompanied by massive technological change, produced enormous output and enormous firms.

New corporate structures 公司组织形式 - trusts and holding companies - allowed consolidation 合并 and, in some industries, near-monopoly.
New transportation and communication networks, above all the railroad, created a genuinely national market.
Business leaders defended their position with laissez-faire 自由放任 arguments: competition promoted growth, and government should stay out.

The same period produced rising inequality 不平等加剧 and recurring financial panics, which is why the economy itself became the central political question.

Vocabulary Train

English	Chinese	Pinyin
corporate structures	公司组织形式	gōng sī zǔ zhī xíng shì
consolidation	合并	hé bìng
laissez-faire	自由放任	zì yóu fàng rèn
rising inequality	不平等加剧	bù píng děng jiā jù

6.7

Labour in the Gilded Age

Syllabus

6.7 Labor in the Gilded Age

Thematic Focus	Learning Objective	Historical Developments
WXT Work, Exchange, and Technology — The interplay between markets, private enterprise, labor, technology, and government policy shape the American economy. In turn, economic activity shapes society and government policy and drives technological innovation.	Unit 6.E Explain the socioeconomic continuities and changes associated with the growth of industrial capitalism from 1865 to 1898.	KC-6.1.I.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. KC-6.1.II.C Labor and management battled over wages and working conditions, with workers organizing local and national unions and/or directly confronting business leaders. KC-6.1.II.B.i The industrial workforce expanded and child labor increased.

Source: College Board AP Course and Exam Description

The Gilded Age argument: the same industrial economy read four different ways, each with its own remedy — One economy, four responses: each group diagnosed a different problem and proposed a different remedy

A variety of perspectives 各种不同的立场 on the economy and labour developed. Workers faced long hours, dangerous conditions, and wages that fell during downturns.

They organised. Unions such as the Knights of Labor 劳工骑士团 and the American Federation of Labor 美国劳工联合会 differed over who to admit and what to demand - the AFL concentrating on skilled workers and practical gains in wages and hours. Strikes 罢工 were frequent, often large, and frequently broken by state or federal force, which itself became an argument about the role of government.

Vocabulary Train

English	Chinese	Pinyin
variety of perspectives	各种不同的立场	gè zhǒng bù tóng de lì chǎng
Knights of Labor	劳工骑士团	láo gōng qí shì tuán
American Federation of Labor	美国劳工联合会	měi guó láo gōng lián hé huì
Strikes	罢工	bà gōng

6.8 6.9

Migration and the Cities

Syllabus

6.8 Immigration and Migration in the Gilded Age

Thematic Focus	Learning Objective	Historical Developments
MIG Migration and Settlement — Push and pull factors shape immigration to and migration within America, and the demographic change as a result of these moves shapes the migrants, society, and the environment.	Unit 6.F Explain how cultural and economic factors affected migration patterns over time.	KC-6.1.II.B.ii The industrial workforce expanded and became more diverse through internal and international migration. KC-6.2.I.A As cities became areas of economic growth featuring new factories and businesses, they attracted immigrants from Asia and 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. KC-6.2.I.B Urban neighborhoods based on particular ethnicities, races, and classes provided new cultural opportunities for city dwellers.

6.9 Responses to Immigration in the Gilded Age

Thematic Focus	Learning Objective	Historical Developments
MIG Migration and Settlement — Push and pull factors shape immigration to and migration within America, and the demographic change as a result of these moves shapes the migrants, society, and the environment.	Unit 6.G Explain the various responses to immigration in the period over time.	KC-6.2.I.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. KC-6.3.I.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. KC-6.3.II.B.i Many women, like Jane Addams, worked in settlement houses to help immigrants adapt to U.S. language and customs.

Source: College Board AP Course and Exam Description

International and internal migration increased urban populations and fostered the growth of cities 城市.

New arrivals came increasingly from southern and eastern Europe 南欧与东欧, alongside Chinese migration to the West - which met the Chinese Exclusion Act 排华法案, the first significant federal restriction on immigration by nationality.

In cities where access to power was unequally distributed, political machines 政治机器 provided jobs, housing help, and services in exchange for votes - corrupt by later standards, and for many migrants the only functioning source of support.

Migration also produced organised hostility. Nativist movements argued that new arrivals threatened wages, culture, or self-government.

Vocabulary Train

English	Chinese	Pinyin
cities	城市	chéng shì
southern and eastern Europe	南欧与东欧	nán ōu yǔ dōng ōu
Chinese Exclusion Act	排华法案	pái huá fǎ àn
political machines	政治机器	zhèng zhì jī qì

6.10 6.11

The New Middle Class and Reform

Syllabus

6.10 Development of the Middle Class

Thematic Focus	Learning Objective	Historical Developments
SOC Social Structures — Social categories, roles, and practices are created, maintained, challenged, and transformed throughout American history, shaping government policy, economic systems, culture, and the lives of citizens.	Unit 6.H Explain the causes of increased economic opportunity and its effects on society.	KC-6.2.I.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. KC-6.3.I.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.

6.11 Reform in the Gilded Age

Thematic Focus	Learning Objective	Historical Developments
SOC Social Structures — Social categories, roles, and practices are created, maintained, challenged, and transformed throughout American history, shaping government policy, economic systems, culture, and the lives of citizens.	Unit 6.I Explain how different reform movements responded to the rise of industrial capitalism in the Gilded Age.	KC-6.3.I.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. KC-6.3.II.B.ii Many women sought greater equality with men, often joining voluntary organizations, going to college, and promoting social and political reform.

Source: College Board AP Course and Exam Description

Corporations' need for managers 管理人员 and for male and female clerical workers 文职人员 expanded a new middle class 中产阶级, with new patterns of consumption and leisure.

Cultural and intellectual movements both buttressed and challenged 既支持又挑战 the social order:

Social Darwinism 社会达尔文主义 used evolutionary language to justify inequality as natural.
The Gospel of Wealth 财富福音 argued that the wealthy had a moral obligation 道德义务 to use their fortunes for the public good.
Agrarians, utopians, socialists, and artists criticised industrial society from the other direction.
Many women sought greater equality, often through voluntary organizations 自愿团体 - temperance, settlement houses, and suffrage work.

Vocabulary Train

English	Chinese	Pinyin
managers	管理人员	guǎn lǐ rén yuán
clerical workers	文职人员	wén zhí rén yuán
middle class	中产阶级	zhōng chǎn jiē jí
buttressed and challenged	既支持又挑战	jì zhī chí yòu tiǎo zhàn
Social Darwinism	社会达尔文主义	shè huì dá ěr wén zhǔ yì
Gospel of Wealth	财富福音	cái fù fú yīn
moral obligation	道德义务	dào dé yì wù
voluntary organizations	自愿团体	zì yuàn tuán tǐ

6.12 6.13

Politics and the Populist Challenge

Syllabus

6.12 Controversies over the Role of Government in the Gilded Age

Thematic Focus	Learning Objective	Historical Developments
PCE Politics and Power — Debates fostered by social and political groups about the role of government in American social, political, and economic life shape government policy, institutions, political parties, and the rights of citizens.	Unit 6.J Explain continuities and changes in the role of the government in the U.S. economy.	KC-6.1.II.A Some argued that laissez-faire policies and competition promoted economic growth in the long run, and they opposed government intervention during economic downturns. KC-6.1.I.E.ii Foreign policymakers increasingly looked outside U.S. borders in an effort to gain greater influence and control over markets and natural resources in the Pacific Rim, Asia, and Latin America.

6.13 Politics in the Gilded Age

Thematic Focus	Learning Objective	Historical Developments
PCE Politics and Power — Debates fostered by social and political groups about the role of government in American social, political, and economic life shape government policy, institutions, political parties, and the rights of citizens.	Unit 6.K Explain the similarities and differences between the political parties during the Gilded Age.	KC-6.1.III.C Economic instability inspired agrarian activists to create the People’s (Populist) Party, which called for a stronger governmental role in regulating the American economic system. KC-6.3.II.A The major political parties appealed to lingering divisions from the Civil War and contended over tariffs and currency issues, even as reformers argued that economic greed and self-interest had corrupted all levels of government. KC-6.2.I.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.

Source: College Board AP Course and Exam Description

The major parties appealed to lingering divisions from the Civil War and competed over patronage 政治分肥 more than policy, producing close elections and limited legislation.

Economic instability drove agrarian activists to build the People's (Populist) Party 人民党, demanding government action: regulation of railroads, currency reform, and a graduated income tax. Populism failed as a party but placed on the agenda the idea that government should intervene in the economy - the argument Period 7 takes up.

Debates over citizenship 公民身份, race, and the role of government ran through all of this, as the rights promised during Reconstruction continued to be narrowed.

Vocabulary Train

English	Chinese	Pinyin
patronage	政治分肥	zhèng zhì fēn féi
People's (Populist) Party	人民党	rén mín dǎng
citizenship	公民身份	gōng mín shēn fèn

6.14

Continuity and Change in Period 6

Syllabus

6.14 Continuity and Change Period 6

Learning Objective	Review: Unit 6 Key Concepts
Unit 6.L Explain the extent to which industrialization brought change from 1865 to 1898.	KC-6.1 Technological advances, large-scale production methods, and the opening of new markets encouraged the rise of industrial capitalism in the United States. KC-6.1.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. KC-6.1.II A variety of perspectives on the economy and labor developed during a time of financial panics and downturns. KC-6.1.III New systems of production and transportation enabled consolidation within agriculture, which, along with periods of instability, spurred a variety of responses from farmers. KC-6.2 The migrations that accompanied industrialization transformed both urban and rural areas of the United States and caused dramatic social and cultural change. KC-6.2.I International and internal migration increased urban populations and fostered the growth of a new urban culture. KC-6.2.II Larger numbers of migrants moved to the West in search of land and economic opportunity, frequently provoking competition and violent conflict. KC-6.3 The Gilded Age produced new cultural and intellectual movements, public reform efforts, and political debates over economic and social policies. KC-6.3.I New cultural and intellectual movements both buttressed and challenged the social order of the Gilded Age. KC-6.3.II Dramatic social changes in the period inspired political debates over citizenship, corruption, and the proper relationship between business and government.

Learning Objective

Review: Unit 6 Key Concepts

Unit 6.L
Explain the extent to which industrialization brought change from 1865 to 1898.

KC-6.1 Technological advances, large-scale production methods, and the opening of new markets encouraged the rise of industrial capitalism in the United States.
- KC-6.1.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.
- KC-6.1.II A variety of perspectives on the economy and labor developed during a time of financial panics and downturns.
- KC-6.1.III New systems of production and transportation enabled consolidation within agriculture, which, along with periods of instability, spurred a variety of responses from farmers.
KC-6.2 The migrations that accompanied industrialization transformed both urban and rural areas of the United States and caused dramatic social and cultural change.
- KC-6.2.I International and internal migration increased urban populations and fostered the growth of a new urban culture.
- KC-6.2.II Larger numbers of migrants moved to the West in search of land and economic opportunity, frequently provoking competition and violent conflict.
KC-6.3 The Gilded Age produced new cultural and intellectual movements, public reform efforts, and political debates over economic and social policies.
- KC-6.3.I New cultural and intellectual movements both buttressed and challenged the social order of the Gilded Age.
- KC-6.3.II Dramatic social changes in the period inspired political debates over citizenship, corruption, and the proper relationship between business and government.

Source: College Board AP Course and Exam Description

The period's reasoning skill is continuity and change. Industrialisation changed where people lived and what they did, while inequality, sectional political loyalties, and racial exclusion persisted.

Worked example (a real AP exam question). The 2025 exam set the long essay "Evaluate the extent to which economic changes influenced United States society between 1865" and the end of the century. A strong thesis names the changes and the groups they affected differently: "Economic change reshaped American society to a great extent after 1865, creating an urban industrial working class and a salaried middle class, but its benefits were distributed so unevenly that farmers and industrial workers organised politically against it." Notice the shape: naming who was affected differently is what allows an essay to argue about extent rather than just describe growth.

6.14

Exam tips

Explain farmers' anger with mechanisms: freight rates, credit, and falling crop prices - not "farmers struggled".
Keep the four Gilded Age responses distinct: laissez-faire, Social Darwinism, the Gospel of Wealth, and organised labour and Populism.
For immigration, name the shift to southern and eastern Europe and the Chinese Exclusion Act as the first nationality-based federal restriction.
Political machines are examinable as both corruption and social provision. Saying both is what earns the complexity.
Populism matters less for winning than for putting government intervention on the agenda.
On continuity-and-change prompts, name a specific continuity. Racial exclusion and unequal wealth are the safest here.

Period 6: 1865–1898

Westward Expansion after the Civil War

6.1 Contextualizing Period 6

6.2 Westward Expansion: Economic Development

6.3 Westward Expansion: Social and Cultural Development

The Rise of Industrial Capitalism

6.4 The “New South”

6.5 Technological Innovation

6.6 The Rise of Industrial Capitalism

Labour in the Gilded Age

6.7 Labor in the Gilded Age

Migration and the Cities

6.8 Immigration and Migration in the Gilded Age

6.9 Responses to Immigration in the Gilded Age

The New Middle Class and Reform

6.10 Development of the Middle Class

6.11 Reform in the Gilded Age

Politics and the Populist Challenge

6.12 Controversies over the Role of Government in the Gilded Age

6.13 Politics in the Gilded Age

Continuity and Change in Period 6

6.14 Continuity and Change Period 6

Exam tips

More topics in AP United States History

Log in or create account

Feedback & help