APUSH Period 8 — The Cold War Abroad and at Home, 1945–1980

Period 8 of AP United States History, 1945 to 1980, carries between 10 and 17 percent of the exam and is one of the richest periods for document-based and long essay questions. This material covers the Cold War: how the United States built a policy of containment, how that policy shaped politics at home, and how the war in Vietnam strained it to the breaking point.

The first questions follow the making of containment in Europe: the Truman Doctrine and its request for aid to Greece and Turkey, the Marshall Plan as economic strategy, and the Berlin blockade that produced the airlift and NATO. Korea shows containment turned into limited war, and Truman's dismissal of General MacArthur shows the price of keeping it limited.

At home, the material explains why the shocks of 1949 and 1950 gave Senator McCarthy an audience, how Sputnik led to NASA and the National Defense Education Act, and what Eisenhower meant when he warned against the influence of the military-industrial complex. The Cuban Missile Crisis is presented through the bargain that ended it.

Vietnam is followed from the Gulf of Tonkin Resolution to the Tet Offensive and its political aftermath, then through Richard Nixon's combination of Vietnamization and détente with China and the Soviet Union. The last question connects Vietnam and Watergate to the War Powers Resolution of 1973 and the wider congressional reaction against an 'imperial presidency.'

The twelve quiz questions include public-domain presidential speeches quoted in the question, Truman's of 1947 and Eisenhower's of 1961, and ask about context, purpose and consequence. Explanations name the traps: dates that belong to other crises, Kennedy's policies attributed to Nixon, a resolution mistaken for a declaration of war.

The eighteen flashcards cover the doctrines, alliances, crises and laws of the Cold War from containment to United States v. Nixon.

The category's material on 1945 to the present already covers the idea of containment, the 1953 coup in Iran, Brown v. Board of Education, suburbanization and the Great Society; a companion material in this category covers the civil rights movement and domestic change in the same period. Use this one during Unit 8 in class or in review before the May exam.

  • Explain how the Truman Doctrine, the Marshall Plan and NATO put containment into practice in Europe
  • Explain why the Korean War remained a limited war and how Cold War fears fed McCarthyism
  • Describe the domestic effects of the Cold War, including Sputnik's impact and the growth of the military-industrial complex
  • Trace American escalation in Vietnam from the Gulf of Tonkin Resolution to the Tet Offensive and Nixon's Vietnamization
  • Explain how Vietnam and Watergate led Congress to limit presidential power

Practice material written by Zestly, based on the College Board AP U.S. History course framework (course and exam description effective fall 2026), Unit 8, Period 8: 1945–1980, topics on the Cold War from 1945 to 1980, the Red Scare, the Vietnam War and the decline of trust in government. Quoted sources are presidential speeches of 1947 and 1961 (public domain).

Sample question

In March 1947 Harry Truman told Congress: 'I believe that it must be the policy of the United States to support free peoples who are resisting attempted subjugation by armed minorities or by outside pressures.' What specific request was the speaker making?

See the answer

Military and economic aid to Greece and Turkey

Britain could no longer support the Greek government against a communist-led insurgency or Turkey against Soviet pressure over the Straits, and Truman asked for 400 million dollars in aid. The open-ended principle behind the request, the Truman Doctrine, became the foundation of containment. The United States had joined the United Nations in 1945 and never declared war on the Soviet Union.

← United States History

↑ AP