Yalta Conference (1945) – Meeting of Allied leaders; shaped postwar Europe.
United Nations (1945) – Created to replace League of Nations.
Containment (1946–1947) – George Kennan’s idea to stop communism from spreading.
Iron Curtain Speech (1946) – Winston Churchill's warning about Soviet expansion.
Truman Doctrine (1947) – US promises to support nations resisting communism.
Marshall Plan (1948) – Economic aid to rebuild Western Europe.
Berlin Airlift (1948–1949) – US and British planes fly supplies to West Berlin during Soviet blockade.
NATO (1949) – Military alliance between the US and Western Europe.
1950s: Cold War Escalation & Domestic Tensions
Korean War (1950–1953) – North Korea invades South Korea; ends in stalemate.
Second Red Scare / McCarthyism – Fear of communists in government; Sen. McCarthy’s accusations.
House Un-American Activities Committee (HUAC) – Investigated suspected communists.
Julius and Ethel Rosenberg (1953) – Executed for allegedly spying for the Soviets.
Eisenhower Doctrine (1957) – Promised US aid to Middle East against communism.
Interstate Highway Act (1956) – Funded road-building, boosted suburbs and defense.
Military-Industrial Complex (Eisenhower's Farewell, 1961) – Warned about the influence of defense spending.
1950s–1960s: Civil Rights Movement
Brown v. Board of Education (1954) – Declared segregation in public schools unconstitutional.
Montgomery Bus Boycott (1955–1956) – Sparked by Rosa Parks; MLK rises as leader.
Little Rock Nine (1957) – Eisenhower sends troops to enforce school integration.
Civil Rights Act of 1957 – First since Reconstruction; focused on voting rights (weak).
Sit-in Movement (1960) – Begins in Greensboro; nonviolent protests spread.
1960s: Liberalism, Civil Rights, & Vietnam
Kennedy’s New Frontier (1960–1963) – Domestic reform and space race.
Bay of Pigs (1961) – Failed CIA-backed invasion of Cuba.
Cuban Missile Crisis (1962) – 13-day standoff; US & USSR avoid nuclear war.
March on Washington (1963) – MLK's "I Have a Dream" speech.
Civil Rights Act of 1964 – Outlawed discrimination based on race, sex, religion.
Voting Rights Act of 1965 – Ended literacy tests, allowed federal oversight of elections.
Great Society (1964–1967) – LBJ's programs: Medicare, Medicaid, War on Poverty.
Gulf of Tonkin Resolution (1964) – Gave LBJ authority to escalate Vietnam.
Selma to Montgomery March (1965) – Led to Voting Rights Act.
Watts Riots (1965) – Urban racial unrest in LA.
Black Power Movement – Shift from integration to racial pride (e.g., SNCC, Malcolm X).
Tet Offensive (1968) – Turning point; public turns against Vietnam War.
Assassinations of MLK and RFK (1968) – Major social unrest.
Democratic National Convention (1968) – Riots over Vietnam War split party.
1970s: Disillusionment & Conservatism Rising
Vietnamization (1969–1973) – Nixon's plan to withdraw US troops, train South Vietnam.
Invasion of Cambodia (1970) – Sparks protests like Kent State shootings.
Pentagon Papers (1971) – Exposed government deception about Vietnam.
Detente (1970s) – Easing of Cold War tensions; Nixon visits China (1972).
SALT I Treaty (1972) – Strategic Arms Limitation Talks with USSR.
Watergate Scandal (1972–1974) – Nixon resigns due to cover-up of break-in.
War Powers Act (1973) – Limits president’s power to wage war.
Roe v. Wade (1973) – Legalized abortion; right to privacy.
OPEC Oil Embargo (1973) – Causes energy crisis and inflation.
Stagflation – High inflation + unemployment + stagnant growth.
Iran Hostage Crisis (1979–1981) – 52 Americans held during Carter's presidency.
Key Social Movements (1950s–1970s)
Feminist Movement – Led by Betty Friedan, NOW, Title IX, Roe v. Wade.
Environmental Movement – Silent Spring (1962) by Rachel Carson, EPA (1970).
Chicano Movement – Cesar Chavez and United Farm Workers.
Gay Rights Movement – Stonewall Riots (1969).
American Indian Movement (AIM) – Activism for tribal rights and sovereignty