Introduction: Why the Cold War Matters in APUSH
The Cold War (1945–1991) is one of the most tested periods on the AP U.S. History Exam. It shaped U.S. foreign and domestic policy for nearly half a century. Understanding major events, policies, and themes will help you succeed on multiple-choice, SAQs, DBQs, and LEQs.
This guide walks you through the essential Cold War events and how to connect them to APUSH exam questions.
Step 1: The Origins of the Cold War (1945–1950)
- Yalta Conference (1945): Post-WWII meeting of FDR, Churchill, Stalin → tensions over Eastern Europe.
- Iron Curtain Speech (1946): Winston Churchill warns of Soviet influence in Eastern Europe.
- Truman Doctrine (1947): U.S. promises to support nations resisting communism (Greece & Turkey).
- Marshall Plan (1948): Economic aid to rebuild Western Europe, preventing communist spread.
- Berlin Blockade/Airlift (1948–1949): First major Cold War conflict; U.S. & allies supply West Berlin by air.
- NATO formed (1949): Military alliance against Soviet threat.
Step 2: Escalation and Containment (1950s)
- Korean War (1950–1953): U.S. fights under UN flag to contain communism; ends in stalemate.
- McCarthyism (1950–1954): Domestic “Red Scare” → fear of communist infiltration.
- Eisenhower Doctrine (1957): U.S. pledges aid to Middle Eastern nations threatened by communism.
- Sputnik (1957): Soviet satellite launch sparks U.S. investment in science, space race, and education.
Step 3: Height of the Cold War (1960s)
- Failed CIA-backed attempt to overthrow Fidel Castro in Cuba.
