| Term | Definition |
| Cold War | The ideological conflict between the Communist nations of Eastern Europe, led by the USSR, and the Wester democracies, led by the USA. No direct conflict between the two superpowers. |
| NATO | North Atlantic Treaty Organization, alliance of all democratic nations, opposed to the spread of communism, led by the US |
| Warsaw Pact | An alliance between the Soviet Union and other Eastern European nations. This was in response to the NATO |
| Marshall Plan | US gave money to Western Europe to rebuild after World War II |
| Truman Doctrine | President Truman's policy of providing economic and military aid to any country threatened by communism or totalitarian ideology |
| Containment | Policy that required the United States to try and keep communism from spreading around the world |
| Iron Curtain | term for an invisible political line that divided Europe between Communists and Non-Communists |
| What nation dominated Eastern Europe after World War II? | Soviet Union |
| What government system did the USSR have? | totalitarian |
| What economic system did the USSR have? | communist |
| USSR | Union of Soviet Socialist Republics, leading communist nation after World War II, formerly Russia |