| A | B |
| iron curtain | during the Cold War, the boundary separating communist nations from the democratic nations in Europe |
| containment | U.S. policy aimed at stopping the spread of communism |
| Truman Doctrine | a U.S. policy of giving economic and military aid to free nations threatened by communism |
| Marshall Plan | a U.S. program of economic aid to European countries to help them rebuild after World War II |
| Domino Theory | the idea that if a nation falls under Communist control,, nearby nations will also fall to Communist control |
| Warsaw Pact | a military alliance formed in 1955 by the Soviet Union and seven Eastern European countries |
| Brinkmanship | a policy of threatening to go to war in response to an enemy aggression |
| Great Leap Forward | an economic and social campaign by the Communist Party of China (CPC) from 1958 to 1961 |
| Korean War | a war fought in the early 1950’s after Communist North Korea invaded Democratic South Korea |
| NATO | the North Atlantic Treaty Organization, a defensive military alliance formed in 1949 |