| A | B |
| satellite nations | this group was dependent on and dominated by the Soviet Union |
| Berlin airlift | this action provided vital supplies to a region blockaded by the Soviet Union |
| United Nations | both the US and USSR joined this group after WWII |
| NATO | this defensive military alliance was the first military alliance that the US ever entered during peacetime |
| Marshall Plan | this aid package was directed "not against any country or doctrine but against hunger, poverty, desperation, and chaos" |
| Cold War | this term refers to the indirect but hostile conflict between the US and the USSR that began at the end of WWII |
| Limited Test Ban Treaty | this barred the explosion of nuclear devices in the atmosphere |
| domino theory | this is based on the idea that countries on the brink of communism were waiting to fall one after the other |
| My Lai Massacre | this murder of 100 innocent Vietnamese villagers by US troops shocked Americans when it was finally revealed to the public |
| Pentagon Papers | publication of this revealed, among other things, that the Johnson administration had lied to the American public about its intentions in Vietnam |
| containment | US policy put into place by President Truman to stop the spread of communism |
| Truman Doctrine | pledge to aid Greece and Turkey form communist aggression |
| Korean War | US commitment of troops to stop the takeover of prowestern South Korea by communist North Korea |
| McCarthyism | wreckless charges of disloyalty leveled by a senator from Wisconsin |
| Vietnam War | US sent troops and military aid to South Vietnam to prevent the communist takeover by North Vietnam |
| space race | copetition between the United States and the Soviet Union over could make the furtherest advancements in space |