U.S. History Study Guide: From Early Imperialism to Modern Court Cases

America Becomes Powerful

• Filipino Insurrection:

  • Armed conflict in which Filipinos fought against United States control.
  • Driven by the Filipino desire for national independence.

• Panama Canal (1904–1914):

  • Major engineering shortcut constructed for maritime vessels.
  • Connects the Atlantic Ocean and the Pacific Ocean to expedite naval and commercial transit.

• Roosevelt Corollary:

  • Policy declaration where the United States asserted the right to intervene in Latin American nations.
  • Intended to protect American economic and strategic interests in the Western Hemisphere.

• Presidential Foreign Policy Frameworks:

  • Big Stick Diplomacy (Theodore Roosevelt): Focused on displaying and leveraging military strength to achieve foreign policy goals.
  • Dollar Diplomacy (William Taft): Centered on using American financial investments and economic resources to extend diplomatic influence.
  • Moral Diplomacy (Woodrow Wilson): Aimed at encouraging democracy and fostering friendly international relationships based on shared values.

• Key Mnemonic:

  • Stick = Military power
  • Dollar = Economic investment
  • Moral = Democratic ideals

World War I (1914–1918)

• MAIN Causes of the War:

  • Militarism: Rapid development and maintenance of large standing armies and modern arsenals.
  • Alliances: Formal treaties and mutual defense promises obligating nations to assist each other if attacked.
  • Imperialism: Competition among global powers to acquire more territory, resources, and colonial influence.
  • Nationalism: Intense national pride and devotion leading to friction between nations and ethnic groups.

• Wartime Alliances:

  • Allied Powers: Great Britain, France, and Russia; the United States joined later in the conflict.
  • Central Powers: Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria.

• Triggers for United States Entry:

  • Sinking of the Lusitania (1915): A German submarine torpedoed a British passenger liner, resulting in American civilian casualties.
  • Unrestricted Submarine Warfare: Germany implemented naval attacks against ships without advance warning, targeting civilian and neutral vessels alike.
  • Zimmermann Telegram: A secret diplomatic communication from Germany to Mexico proposing a military alliance against the U.S., offering German support for Mexico to reclaim lost territory.
  • Formal U.S. Entry (1917): Prompted directly by German submarine warfare and the discovery of the Zimmermann Telegram.

• Combat Conditions and Key Military Figures:

  • Trench Warfare: Combat conducted from extensive networks of protective ditches; operations were characterized by severe stalemates and minimal territorial gains.
  • John J. Pershing: General who served as Commander of American forces in Europe.
  • Harlem Hellfighters: Renowned African American Army regiment recognized for exceptional bravery on the front lines.
  • Alvin C. York: Highly decorated soldier from Tennessee who earned the Medal of Honor for valor in combat.
  • Committee on Public Information: Wartime agency that utilized mass propaganda campaigns to cultivate domestic public support for the war.

• Peace Planning and the Postwar Order:

  • Wilson’s Fourteen Points: A comprehensive blueprint for postwar peace, featuring a proposal for a League of Nations designed to prevent future conflicts.
  • League of Nations: An international peace and security organization established after the war; the United States chose not to join.

• Key Mnemonic:

  • MAIN starts the war.
  • Ships + telegram bring America into the conflict.
  • Fourteen Points attempt to prevent another war.

The Roaring Twenties

• Foreign Policy Shift:

  • Isolationism: A national political philosophy prioritizing withdrawal from international disputes and focusing exclusively on domestic affairs.

• Culture and the Arts:

  • Jazz Age: An era marked by the popularity of jazz music, energetic dancing styles, flappers, and changing social rules.
  • Harlem Renaissance: A cultural movement celebrating African American identity through literature, visual art, and music.
  • Prominent Jazz Musicians: Louis Armstrong, Duke Ellington, and Cab Calloway.
  • Prominent Writers: Langston Hughes and Zora Neale Hurston.

• Economic and Consumer Transformation:

  • Consumer Culture: A surge in mass purchasing of manufactured goods, including automobiles, household radios, and modern electrical appliances.
  • Credit Purchases: Widespread adoption of consumer financing programs based on the concept of "buy now, pay later."

• Key Mnemonic:

  • 1920s = Jazz, new social freedoms, and massive consumer buying.

The Great Depression and the New Deal

• Economic Collapse:

  • The Great Depression: A prolonged, severe economic catastrophe characterized by systemic bank closures, mass unemployment, and widespread poverty.
  • Stock Market Crash (1929): The dramatic and sudden collapse of stock prices that marked the beginning of the Great Depression.
  • Contributing Causes: Agricultural and industrial overproduction, systemic bank failures, excessive private debt, protective high tariffs, and soaring unemployment rates.

• The New Deal Response:

  • Franklin D. Roosevelt (FDR): Elected president; inaugurated the New Deal legislative agenda starting in 1933.
  • Three Core Goals: Relief for the unemployed and poor, recovery of the economy, and systemic reform to prevent future depressions.

• Key New Deal Agencies and Legislation:

  • Civilian Conservation Corps (CCC): Provided outdoor labor employment for young men, focusing on state and national parks, forestry work, and road building.
  • Works Progress Administration (WPA): Generated public works jobs focused on the construction of public buildings, bridges, and roadways.
  • Tennessee Valley Authority (TVA): Regional development initiative constructing dams, providing flood control, and generating affordable electricity throughout the Tennessee Valley.
  • Federal Deposit Insurance Corporation (FDIC): Federal insurance agency created to protect eligible commercial bank deposits from institutional failure.
  • Agricultural Adjustment Act (AAA): Agricultural recovery program that paid financial subsidies to farmers to cut back production, aiming to raise crop values.
  • Social Security: National social welfare program providing financial support for retirees, eligible individuals with disabilities, and surviving dependents.

• Constitutional Conflict:

  • Court Packing: FDR proposed legislation to add additional justices to the United States Supreme Court; the measure was officially rejected by Congress.

• Key Mnemonic:

  • CCC = Outdoors
  • WPA = Construction
  • TVA = Dams
  • FDIC = Bank deposits
  • AAA = Farms

The Road to World War II

• Rise of Totalitarian Regimes:

  • Totalitarianism: A political system in which an authoritarian dictator or single ruling party maintains complete control over virtually all aspects of public and private life.
  • Adolf Hitler: Dictator of Nazi Germany.
  • Benito Mussolini: Fascist dictator of Italy.
  • Joseph Stalin: Totalitarian leader of the Soviet Union.
  • Hideki Tojo: Military leader and Prime Minister of Japan during much of World War II.

• American Wartime Ideals and Policies:

  • Four Freedoms: Essential human freedoms articulated as national ideals: freedom of speech, freedom of worship, freedom from want, and freedom from fear.
  • Neutrality Acts: Series of isolationist laws passed to prevent American commercial or political entanglement in foreign wars.
  • Cash and Carry: Foreign policy provision permitting belligerent nations to purchase non-military supplies if they paid in cash and arranged their own maritime transport.
  • Lend-Lease: Policy allowing the United States to supply armaments, equipment, and materiel to foreign nations actively fighting the Axis powers.

• Direct U.S. Entry:

  • Attack on Pearl Harbor (December 7, 1941): Surprise aerial and naval strike by Japan against the United States naval base at Pearl Harbor, Hawaii.
  • Directly caused the United States to enter World War II.

• Key Mnemonic:

  • Pearl Harbor = The catalyst bringing the U.S. into World War II.

Four Critical World War II Battles

• Battle of Midway (June 1942):

  • Major naval engagement in the Pacific theater.
  • United States naval victory that damaged the Japanese fleet and marked a decisive turning point in the Pacific War.

• D-Day (June 6, 1944):

  • Massive Allied amphibious invasion along the beaches of Normandy, France.
  • Initiated the broader Allied military campaign to liberate Western Europe from Nazi control.

• Battle of Iwo Jima (February 1945):

  • Fierce battle resulting in the United States Marine Corps capturing a fortified Pacific island.
  • Secured to serve as an emergency landing strip and forward base for Allied bombing runs.

• Battle of Okinawa (April 1945):

  • Costly amphibious operation situated in close proximity to the Japanese mainland.
  • Marked by heavy Allied casualties and sustained kamikaze suicide strikes against Allied naval vessels.

• Key Mnemonic:

  • Midway = Aircraft carriers
  • D-Day = Invasion of France
  • Iwo Jima = Island airfield
  • Okinawa = Near the Japanese home islands

The End of World War II and Key Leaders

• Wartime Diplomacy and Postwar Planning:

  • Yalta Conference (February 1945): Meeting of the "Big Three"—Franklin D. Roosevelt, Winston Churchill, and Joseph Stalin—to finalize wartime strategy and organize postwar European governance.
  • Potsdam Conference (July 1945): Summit involving Harry Truman, Joseph Stalin, and Winston Churchill (succeeded midway through by Clement Attlee) to establish postwar settlements and policies.

• The Atomic Bomb and War Termination:

  • Manhattan Project: Highly classified scientific research and development initiative that successfully engineered the atomic bomb.
  • Hiroshima and Nagasaki (August 1945): Japanese cities targeted by American atomic bombs, prompting the unconditional surrender of Japan shortly thereafter.

• Key Wartime Leaders:

  • Franklin D. Roosevelt: President of the United States from 1933 until his death in 1945.
  • Harry Truman: Vice President who succeeded Franklin D. Roosevelt in 1945 and authorized the use of atomic weapons.
  • Winston Churchill: British Prime Minister across the majority of World War II.
  • George C. Marshall: Senior general and top-ranking military leader in the United States Army.
  • Douglas MacArthur: General of the Army who served as Allied Supreme Commander in the Pacific theater.
  • Dwight Eisenhower: General of the Army who served as Supreme Allied Commander of forces in Europe.
  • Cordell Hull: Secretary of State hailing from Tennessee who established the essential groundwork for creating the United Nations.

• Key Mnemonic:

  • Eisenhower = European theater
  • MacArthur = Pacific theater
  • Manhattan = Atomic weapons project

Key Constitutional Amendments

• Sixteenth Amendment: Grants Congress the legal power to levy and collect a federal income tax.

• Seventeenth Amendment: Mandates the direct election of United States senators by popular vote rather than state legislatures.

• Eighteenth Amendment: Imposed a nationwide constitutional prohibition on the manufacture, sale, and transport of intoxicating liquors.

• Nineteenth Amendment: Prohibits the denial of voting rights based on sex, constitutionally guaranteeing women the right to vote.

• Twenty-First Amendment: Repealed the Eighteenth Amendment, bringing an end to federal Prohibition.

• Twenty-Second Amendment: Limits an individual to being elected president of the United States no more than twice.

• Twenty-Third Amendment: Grants the District of Columbia electoral votes in presidential elections.

• Twenty-Fourth Amendment: Prohibits the use of poll taxes as a condition for voting in federal elections.

• Twenty-Fifth Amendment: Establishes formal procedures regarding presidential succession and executive disability.

• Twenty-Sixth Amendment: Lowers the federal and state voting age to 18 years.

• Key Mnemonic:

  • 16 = Income taxes
  • 17 = Direct election of senators
  • 18 = Ban on alcohol
  • 19 = Women vote
  • 21 = Alcohol returns
  • 24 = Elimination of poll taxes
  • 26 = Voting rights at 18

Landmark Supreme Court Cases

• Plessy v. Ferguson (1896):

  • Established the constitutional legitimacy of legal segregation in public accommodations under the "separate but equal" doctrine.

• Schenck v. United States (1919):

  • Upheld criminal convictions under federal law for speech directed at opposing the military draft during wartime.

• Korematsu v. United States (1944):

  • Upheld the wartime exclusion and internment of Japanese Americans as a constitutional military necessity; this decision has since been officially repudiated.

• Brown v. Board of Education (1954):

  • Declared racial segregation in state-sponsored public school systems unconstitutional, invalidating "separate but equal" in public education.

• Roe v. Wade (1973):

  • Recognized an implied constitutional right to privacy that included the decision to obtain an abortion.

• Dobbs v. Jackson Women's Health Organization (2022):

  • Explicitly overturned the constitutional right established in Roe v. Wade, restoring the authority to regulate or prohibit abortion to elected state and federal legislatures.

• Key Mnemonic:

  • Plessy allowed segregation; Brown rejected segregation in public schools.
  • Roe recognized abortion rights; Dobbs overturned Roe.

Quick Practice Questions and Answers

• Question 1: What does MAIN stand for?

  • Answer: Militarism, Alliances, Imperialism, Nationalism.

• Question 2: Why did the U.S. enter WWI?

  • Answer: Submarine warfare and the Zimmermann Telegram.

• Question 3: What is the Panama Canal?

  • Answer: A shortcut for ships.

• Question 4: What was the Harlem Renaissance?

  • Answer: African American art, music and writing.

• Question 5: What happened in 1929?

  • Answer: Stock market crash.

• Question 6: What was the New Deal?

  • Answer: FDR’s programs to help the economy.

• Question 7: Which New Deal program built dams?

  • Answer: TVA.

• Question 8: What brought the U.S. into WWII?

  • Answer: Pearl Harbor.

• Question 9: What happened on D-Day?

  • Answer: Allied invasion of Normandy, France.

• Question 10: What was the Manhattan Project?

  • Answer: Atomic bomb project.

• Question 11: Which amendment gave women voting rights?

  • Answer: 19th.

• Question 12: Which case ended school segregation?

  • Answer: Brown v. Board of Education.

• Question 13: Which case overturned Roe?

  • Answer: Dobbs.

55-Minute Study Plan

• First 20 Minutes: Focus study on Sections 1 through 4 (America Becomes Powerful, World War I, The Roaring Twenties, and The Great Depression and New Deal).

• Second 20 Minutes: Focus study on Sections 5 through 9 (The Road to World War II, Four Battles to Know, The End of WWII and Its Leaders, Constitutional Amendments, and Supreme Court Cases).

• Final 15 Minutes: Cover the practice answers provided in the guide and perform self-quizzing aloud, concentrating directly on any questions answered incorrectly.