AP United States History, AP exams, 10–17%

Unit 6: Period 6, 1865–1898

Period 6 covers industrialization, the incorporation of the West, mass immigration, and the political and cultural responses to rapid economic change. Questions frequently pair a Gilded Age business or labor document with a reform or protest source. The unit rewards students who can hold economic causes and social effects in the same argument.

Position: 6 of 9 units
Published weighting: 10–17% in the official framework
Topics covered: 7 topics in this guide

What is covered

Topics inside this unit.

These topics describe the scope students most often review for this part of AP United States History. Treat them as a study checklist rather than an exhaustive list of what a single exam form can sample.

The West: settlement, conflict, and myth: Railroads, homesteading, mining, and federal Indian policy from reservations through the Dawes Act.
Industrialization and technological innovation: New technologies, corporate consolidation, vertical and horizontal integration, and the growth of a national market.
Labor and the working class: Wage work, strikes such as Pullman and Homestead, and the differing strategies of the Knights of Labor and the AFL.
Immigration, migration, and urban growth: New immigration from southern and eastern Europe, internal migration, tenement cities, and nativist reaction.
The New South and racial retrenchment: Segregation law, disfranchisement, sharecropping, and competing Black responses to Jim Crow.
Responses to the Gilded Age economy: Social Darwinism, the Gospel of Wealth, the Social Gospel, Populism, and early calls for regulation.
Gilded Age politics: Machine politics, civil service reform, tariff and currency fights, and the election of 1896.

Study tips

How to practice Period 6.

Section-specific guidance that follows from how this material is usually tested.

Keep one card contrasting how business leaders, labor organizers, and Populists explained inequality.
Practice sourcing questions on Gilded Age documents; purpose and audience are usually the easiest points.
Connect western settlement to industrial demand for resources so the West stops feeling like a separate story.

Where this fits

Unit 6: Period 6, 1865–1898 is 6 of 9 units in the AP United States History guide, and it carries a published weighting of 10–17% in the official framework. Use the full guide to balance it against everything else you have to review.

Back to the AP United States History guide Official exam information

Sample Period 6 questions

Practice questions, not yet expert-reviewed

Original practice questions written to the published framework for this section. No expert has reviewed them, and they are not taken from any official exam. Try each one before you open the answer.

Question 1Foundational
Which 1887 federal law divided tribal lands into individual family allotments and opened the remaining acreage for sale to non-Native buyers?
1. AThe Homestead Act
2. BThe Dawes Act
3. CThe Indian Removal Act
4. DThe Indian Reorganization Act
Show answer
Answer: B. The Dawes Act
The Dawes Act sought to force assimilation by breaking up communal landholding, and Native nations lost a large share of their remaining land as surplus acreage passed to white purchasers. The Indian Reorganization Act is the tempting distractor because it also reshaped landholding, but it came in 1934 and reversed the allotment policy.
Key insight: Federal Indian policy in this period aimed at assimilation and land transfer at the same time, and allotment accomplished both.
Question 2Foundational
Which labor organization founded in 1886 under Samuel Gompers organized skilled craft workers and concentrated on wages, hours, and working conditions?
1. AThe Knights of Labor
2. BThe American Federation of Labor
3. CThe Industrial Workers of the World
4. DThe People's Party
Show answer
Answer: B. The American Federation of Labor
The AFL federated unions of skilled craftsmen and pursued concrete bargaining goals rather than a sweeping reform program, which helped it endure when rivals collapsed. The Knights of Labor is the tempting distractor because it was larger in the mid-1880s, but it recruited nearly all workers and pursued broad reform, and it declined after the Haymarket affair of 1886.
Key insight: Gilded Age labor organizations differed less over grievances than over who counted as a member and how broad the program should be.
Question 3Intermediate
What is the name for Andrew Carnegie's strategy of buying the iron mines, coke works, ships, and railroads that supplied and carried materials for his steel mills?
1. AHorizontal integration
2. BVertical integration
3. CCollective bargaining
4. DInterlocking directorates
Show answer
Answer: B. Vertical integration
Vertical integration means controlling every stage of production from raw material to finished product, which cut Carnegie's costs and freed him from dependence on suppliers. Horizontal integration is the tempting distractor: it describes Rockefeller's method of absorbing competing refineries in order to dominate a single stage of an industry.
Key insight: Consolidation strategies explain how a handful of firms came to control whole industries within a single generation.
Question 4Intermediate
Which 1896 Supreme Court decision upheld a Louisiana railroad segregation law and established the separate but equal doctrine?
1. APlessy v. Ferguson
2. BThe Civil Rights Cases
3. CBrown v. Board of Education
4. DMunn v. Illinois
Show answer
Answer: A. Plessy v. Ferguson
The Court held that separate facilities did not violate the Fourteenth Amendment so long as they were nominally equal, and the ruling licensed segregation statutes across the South for the next half century. The Civil Rights Cases are the tempting distractor because they also narrowed Reconstruction protections, but that 1883 decision struck down the Civil Rights Act of 1875 as applied to private businesses.
Key insight: Jim Crow was built by state legislatures and ratified by federal courts, which is why it took federal action to dismantle it.
Question 5Advanced
The Populist Party's 1892 Omaha Platform demanded free and unlimited coinage of which metal in order to expand the money supply and relieve farm debt?
1. AGold
2. BSilver
3. CCopper
4. DNickel
Show answer
Answer: B. Silver
Farmers argued that coining silver alongside gold would raise prices and make mortgages easier to repay, and free silver became the rallying cry that Populists carried into William Jennings Bryan's 1896 campaign. Gold is the tempting distractor because it was the center of the money debate, but the existing gold standard was exactly what Populists blamed for falling prices.
Key insight: Behind the technical currency argument lay a plain conflict between debtors who wanted inflation and creditors who did not.

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Unit 6: Period 6, 1865–1898