Unit 9: Cold War and Contemporary Europe

World War II (1939–1945)

A global conflict whose end produced major postwar instability and new frameworks shaping the Cold War, decolonization, human-rights politics, and European integration.

Germany’s unconditional surrender (May 1945)

The end of the war in Europe; signed May 7, 1945 (Reims, France) and ratified May 8 in Berlin.

Hiroshima bombing (August 6, 1945)

First U.S. atomic bombing of Japan; part of the events leading to Japan’s surrender and controversial due to massive civilian casualties.

Nagasaki bombing (August 9, 1945)

Second U.S. atomic bombing of Japan; contributed to Japan’s surrender and killed large numbers of civilians, fueling long-term moral and political controversy.

Japan’s formal surrender (September 2, 1945)

The official end of World War II; surrender was signed aboard the USS Missouri in Tokyo Bay.

United Nations (UN) (1945)

International organization founded after WWII to promote cooperation and prevent future wars; replaced the League of Nations.

Universal Declaration of Human Rights (UDHR) (1948)

A landmark UN document articulating shared standards of human rights in response to wartime atrocities.

Decolonization

The acceleration of independence movements after WWII as weakened European empires faced rising anticolonial nationalism in Asia and Africa.

Cold War

Long-term geopolitical rivalry between the United States and the Soviet Union and their allies, shaping European politics after 1945.

Globalization

Rising cross-border integration in trade, communication, and economies that produced growth and exchange but also inequality and dislocation.

Colonialism

The building of extractive empires and trade networks that increased Western power while disrupting traditional societies and exploiting resources.

Winston Churchill

British prime minister (1940–45; 1951–55) who helped shape early Cold War rhetoric; warned of an “iron curtain” in 1946.

Iron Curtain

Churchill’s term for Europe’s Cold War division; a system of border controls, censorship, and restricted movement/information in the East.

Joseph Stalin

Soviet leader (1924–1953) who oversaw Soviet expansion into Eastern Europe and whose rule included purges and show trials.

Nikita Khrushchev

Soviet leader (1953–1964) who pursued de-Stalinization and played a central role in the Cuban Missile Crisis.

De-Stalinization

Khrushchev-era reforms that condemned Stalin’s abuses and loosened some controls, but only within limits that protected Soviet bloc dominance.

“Secret Speech” (1956)

Khrushchev’s speech denouncing Stalin’s crimes; weakened communist legitimacy and encouraged reform, while also destabilizing the bloc.

Yalta Conference (February 1945)

Meeting of Roosevelt, Churchill, and Stalin that shaped postwar planning and influenced occupation arrangements and Eastern Europe’s future.

Potsdam Conference (July–August 1945)

Post-surrender meeting (with Truman and Attlee replacing Roosevelt and Churchill) that set occupation details and left key disputes unresolved, especially over “free elections” in Eastern Europe.

Denazification

Allied policy to remove Nazi influence from German politics and society after WWII through purges, trials, and institutional reforms.

Demilitarization

Allied goal after WWII to eliminate Germany’s capacity for aggressive war by reducing and controlling its military potential.

Security dilemma

A situation where one state’s defensive moves (alliances, buffer zones) appear threatening to others, prompting escalation—used to explain Cold War origins.

Containment

U.S. strategy announced in 1947 aiming to prevent further Soviet expansion rather than roll back communism everywhere.

Truman Doctrine (1947)

U.S. pledge of aid to governments resisting communism, first associated with Greece and Turkey; a key pillar of containment.

Marshall Plan / European Recovery Program (1947)

Large-scale U.S. economic aid to rebuild Western Europe; reduced communist appeal, tied Europe to U.S. leadership, and encouraged cooperation.

COMECON (1949)

Soviet-bloc economic coordination organization created after the USSR rejected the Marshall Plan and pressured Eastern Europe to reject it too.

Federal Republic of Germany (FRG) (1949)

West Germany, formed from the Western occupation zones; became a central part of the Western bloc.

German Democratic Republic (GDR) (1949)

East Germany, created from the Soviet occupation zone; became a key Soviet satellite state.

Berlin Blockade (1948–1949)

First major Cold War crisis in Europe, when the USSR cut land access to West Berlin to pressure the Western Allies.

Berlin Airlift

Western response to the Berlin Blockade: supplying West Berlin by air until the blockade ended, avoiding direct war.

NATO (North Atlantic Treaty Organization) (1949)

Western collective defense alliance; an attack on one member would be treated as an attack on all.

Warsaw Pact (1955)

Soviet-led alliance that served both as a military bloc and as a mechanism for Soviet control over satellite states’ security policies.

Hungarian Revolution (1956)

Major uprising against Soviet domination in Hungary; crushed by Soviet military intervention, demonstrating the limits of reform.

Prague Spring (1968)

Czechoslovak reform movement seeking liberalization (“socialism with a human face”); ended by Warsaw Pact invasion.

Berlin Wall (1961)

Barrier built by East Germany with Soviet backing to stop emigration via Berlin; became a symbol of Cold War division and Eastern bloc weakness.

Welfare state

System in which governments protect citizens from severe economic insecurity through benefits like healthcare, pensions, unemployment support, housing, and education.

Wirtschaftswunder

West Germany’s postwar “economic miracle,” fueled by rebuilding, Marshall Plan support, technology, consumer demand, and stable trade.

Christian democracy

Postwar Western European political tradition often socially conservative yet supportive of welfare measures, anti-communist, and favorable to European integration.

Social democracy

Postwar political tradition supporting parliamentary democracy and expanded welfare policies, usually less revolutionary than earlier socialist movements.

Fifth Republic (France) (1958– )

French political system created when Charles de Gaulle returned to power; strengthened the executive after instability in the Fourth Republic.

National Health Service (NHS) (1948)

Britain’s national healthcare system created as part of postwar welfare expansion and a broader mixed-economy consensus.

May 1968 (France)

Wave of student protests and worker strikes challenging authority, consumer society, and traditional norms in a prosperous Western European state.

Détente

1970s easing of U.S.–Soviet tensions that enabled diplomacy and arms talks without ending rivalry, proxy conflicts, or military competition.

Helsinki Accords (1975)

Agreements that recognized postwar borders (important to the USSR) while emphasizing human rights, which dissidents used to pressure communist regimes.

Solidarity (Solidarność) (1980)

Independent Polish trade union that became a powerful model of organized civil-society opposition to communist rule, associated with worker-based nationwide mobilization.

Perestroika

Gorbachev’s “restructuring” reforms in the USSR aimed at changing the Soviet system; helped reduce Soviet willingness to enforce control by force in Eastern Europe.

Glasnost

Gorbachev’s policy of “openness,” increasing transparency and public discussion; contributed to the destabilization of communist legitimacy and control.

Treaty of Rome (1957)

Treaty that created the European Economic Community (EEC), promoting a common market by reducing trade barriers and deepening economic cooperation.

Maastricht Treaty (1992)

Treaty that established the European Union (EU) and set the course for deeper integration, including monetary integration.

Brexit

The UK’s departure from the EU, following the 2016 referendum and formal exit on January 31, 2020; highlighted tensions over sovereignty, identity, and migration.