Reconstruction & Westward Migration
Gilded Age
World War I & World War II
Cold War
Policies, Laws, and Court Cases
100

Black Codes

Laws passed in Southern states to restrict African Americans' freedom and maintain white supremacy.

100

Muckrakers

Journalists who exposed corruption and social injustices

100

Treaty of Versailles

Ended WWI; blamed Germany and imposed harsh penalties.

100

Cold War

Period of tension between the U.S. and Soviet Union without direct conflict.

100

Containment

U.S. policy to stop communism, supported by Truman and Eisenhower.

200

Plessy v. Ferguson

Supreme Court case that upheld racial segregation under the 'separate but equal' doctrine (1896).

200

Mass Production

The manufacture of goods in large quantities, often using assembly lines.

200

Causes of WWI

Militarism, Alliances, Nationalism, and Imperialism.

200

Arms Race

U.S. and USSR competition to build powerful weapons, especially under Kennedy.

200

13th, 14th, and 15th Amendment

13. Abolished slavery in the United States (1865).

14. Granted citizenship to all born or naturalized in the U.S. and guaranteed equal protection under the law (1868).

15. Gave African American men the right to vote by prohibiting voting discrimination based on race or color (1870).

300

Sharecropping

A farming system where freedmen and poor whites worked land owned by others in exchange for a share of the crops.

300

Bessemer Process

A method to produce steel quickly and cheaply. Andrew Carnegie pioneers this. 

300

League of Nations

International group to maintain peace; U.S. did not join.

300

Proxy Wars

Conflicts where superpowers supported opposing sides (e.g., Korea, Vietnam).

300

Judicial Activism

When courts make bold decisions that lead to new laws or social change.

400

Indian Removal Act

Law that authorized the forced relocation of Native American tribes to lands west of the Mississippi River (1830).

400

First vs. Second Industrial Revolution

First: textiles, steam power (late 1700s–mid-1800s). Second: steel, electricity, mass production (late 1800s–early 1900s).

400

Washington Naval Conference

Agreement among major powers to limit naval armament (1921–22), reducing or eliminating military forces or weapons.

400

Détente

A period of eased tensions with the USSR, promoted by Nixon.

400

Brown v. Board of Education

Declared segregation in public schools unconstitutional (1954).

500

Grange Movement

A social and political movement that aimed to help farmers by advocating for railroad regulation and cooperative buying.

500

Upton Sinclair’s The Jungle

Exposed unsanitary meatpacking conditions; led to food safety laws.

500

GI Bill

Provided benefits like education and housing loans to WWII veterans.

500

Glasnost and Perestroika

Soviet reforms under Gorbachev: openness and economic restructuring (freedom of speech and private ownership).

500

Miranda v. Arizona

Required police to inform suspects of their legal rights.

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