Naval strategist who emphasized the importance of sea power in national strength.
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Queen Liliuokalani
Last monarch of Hawaii, overthrown by U.S.-backed forces in 1893.
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Pan-American Conference
Meetings to improve relations and economic ties between the U.S. and Latin America.
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Jingoism
Aggressive nationalism favoring an assertive foreign policy.
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Cuban Revolt
Cuban uprising against Spanish rule, which led to U.S. intervention.
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Yellow Journalism
Sensationalized news that exaggerated events to sway public opinion.
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De Lome Letter
A letter criticizing President McKinley, fueling U.S. tensions with Spain.
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Teller Amendment
Stated the U.S. would not annex Cuba after the Spanish-American War.
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Platt Amendment
Allowed U.S. intervention in Cuba and control over Cuban foreign policy.
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Sphere of Influence
Areas where foreign powers controlled trade and investment.
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George Dewey
U.S. naval commander who won the Battle of Manila Bay in the Spanish-American War.
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Emilio Aguinaldo
Filipino leader who fought against Spain and later the U.S.
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Rough Riders
Volunteer cavalry led by Theodore Roosevelt in the Spanish-American War.
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Hawaii
Annexed by the U.S. in 1898 for its strategic and economic value.
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Theodore Roosevelt
26th president, known for the Roosevelt Corollary and Big Stick Diplomacy.
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Open Door Policy
U.S. policy advocating equal trade opportunities in China.
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Boxer Rebellion
Anti-foreigner uprising in China, suppressed by international forces.
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Panama Canal
Waterway connecting the Atlantic and Pacific, built by the U.S.
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William Howard Taft
27th president, known for Dollar Diplomacy.
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Dollar Diplomacy
Using economic investment to extend U.S. influence abroad.
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Roosevelt Corollary
Extension of the Monroe Doctrine, allowing U.S. intervention in Latin America.
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Russo-Japanese War
Conflict between Russia and Japan; Roosevelt brokered the peace treaty.
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Puerto Rico
Gained by the U.S. from Spain; later granted self-government.
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Woodrow Wilson
28th president, known for Moral Diplomacy and leading the U.S. into WWI.
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Moral Diplomacy
Wilson’s policy promoting democracy and moral leadership in foreign affairs.
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Pragmatism
Philosophy emphasizing practical solutions over ideals.
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Ida Tarbell
Muckraker journalist who exposed Standard Oil’s monopoly.
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Jacob Riis
Photographer and journalist who exposed urban poverty in How the Other Half Lives.
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Muckrakers
Investigative journalists exposing corruption and social issues.
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Florence Kelley
Social reformer advocating for labor rights and child labor laws.
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Triangle Shirtwaist Fire
Tragic factory fire that led to improved workplace safety laws.
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16th Amendment
Established a federal income tax.
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17th Amendment
Allowed direct election of U.S. senators.
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18th Amendment
Prohibited alcohol (Prohibition).
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Square Deal
Roosevelt’s domestic policy focusing on consumer protection and labor rights.
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Mann-Elkins Act
Strengthened regulation of railroads and telecommunications.
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The Jungle (Upton Sinclair)
Exposed the unsanitary meatpacking industry, leading to food safety laws.
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“Bull Moose” Party
Progressive Party led by Roosevelt in the 1912 election.
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Booker T. Washington
Black leader advocating for vocational education and economic progress.
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W.E.B. Du Bois
Civil rights leader advocating for immediate racial equality.
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NAACP
Organization fighting for African American civil rights.
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Alice Paul
Women’s rights activist and leader in the fight for suffrage.
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19th Amendment
Gave women the right to vote.
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Lusitania
British ship sunk by a German U-boat, killing Americans and escalating tensions.
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Preparedness
U.S. movement advocating military readiness before entering WWI.
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Zimmerman Telegram
German message urging Mexico to join the war against the U.S.
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John J. Pershing
Commander of U.S. forces in WWI.
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George Creel
Led the Committee on Public Information to promote pro-war propaganda.
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Bolsheviks
Russian communist revolutionaries who took power in 1917.
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Fourteen Points
Wilson’s peace plan promoting self-determination and the League of Nations.
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League of Nations
International organization to maintain peace; the U.S. did not join.
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Henry Cabot Lodge
Opposed the Treaty of Versailles and the League of Nations.
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Self-determination
The right of people to govern themselves.
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Reparations
Payments imposed on Germany after WWI.
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Mobilization
Organizing resources for war.
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Liberty Bonds
Government bonds used to finance WWI.
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Spanish Flu
1918 pandemic that killed millions.
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Schenck v. U.S.
Supreme Court case limiting free speech during wartime.
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Selective Service Act
Established the WWI draft.
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The Red Scare (1st)
Fear of communism after WWI.
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Nativism
Anti-immigrant sentiment.
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Sacco & Vanzetti
Immigrant anarchists executed amid controversy.
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The Great Migration
Movement of Black Americans from the South to Northern cities.
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Fundamentalism
Religious movement favoring literal interpretation of the Bible.
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Traditionalism
Cultural conservatism opposing modern changes.
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Henry Ford
Revolutionized manufacturing with the assembly line.
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Assembly Line Process
Mass production technique.
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Art Deco
Stylish modernist architectural design.
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Charles Lindbergh
First solo flight across the Atlantic.
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Modernism
Embracing new cultural and artistic movements.
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Scopes Trial
Debate over evolution in schools.
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“Scarface” Al Capone
Famous Prohibition-era gangster.
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Margaret Sanger
Advocate for birth control.
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Harlem Renaissance
Black cultural movement in the 1920s.
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“Jazz Age”
1920s era of jazz music and cultural change.
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Marcus Garvey
Leader of the Back-to-Africa movement.
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Warren G. Harding
President promoting “Return to Normalcy.”
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Teapot Dome
Corruption scandal in Harding’s administration.
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Great Depression
Economic collapse of the 1930s.
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New Deal Programs
Government efforts to end the Great Depression.
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Pearl Harbor
Japanese attack bringing the U.S. into WWII.
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D-Day
Allied invasion of Nazi-occupied France.
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Atomic Weapons
Developed in the Manhattan Project, used on Hiroshima and Nagasaki to end WWII.
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AAA (Agricultural Adjustment Act)
Aimed to reduce agricultural overproduction by paying farmers to cut back on crop and livestock production, helping to raise prices.
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PWA (Public Works Administration)
Funded large-scale public works projects like bridges, dams, and schools to create jobs and stimulate the economy.
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CCC (Civilian Conservation Corps)
Provided young men with jobs related to environmental conservation, such as planting trees, building trails, and fighting wildfires.
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TVA (Tennessee Valley Authority)
Built dams and power plants in the Tennessee Valley region to control flooding, provide electricity, and boost economic development.
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NRA (National Recovery Administration)
Created codes for fair wages, hours, and prices in various industries to help businesses recover; later declared unconstitutional.
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SEC (Securities and Exchange Commission)
Regulated the stock market to prevent fraud and abuses that led to the 1929 crash.
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FHA (Federal Housing Administration)
Provided mortgage insurance and low-interest loans to encourage home ownership and construction.
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CWA (Civil Works Administration)
Created temporary jobs for millions of unemployed workers on public projects like roads and schools during the winter of 1933-34.
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WPA (Works Progress Administration)
The largest New Deal agency, it provided jobs in public works, arts, and education, employing millions in projects ranging from construction to theater productions.