| A | B |
| Potsdam Conference | Conference where the Allied Powers of World War II decided to divide Germany after the war ended. |
| Berlin Airlift | A period of time when the US and its allies dropped supplies for 327 days into Berlin because the Soviet Union closed off all roads to West Berlin. |
| Democracy | A government ruled by the people, the United States is a democracy. |
| NATO (North Atlantic Treaty Organization | A government ruled by the people, the United States is a democracy. |
| Communism | A political and economic system where all decisions are made by the government, the Soviet Union is a communist government. |
| Iron Curtain | A phrase used to describe the division between democratic Western Europe and Communist Eastern Europe. |
| Soviet Union | The communist nation involved in the Cold War with the US. |
| Eastern Europe | An area of Europe controlled by the Soviet Union |
| Occupation Zone | An area controlled by another country's military; Berlin was divided into four zones |
| Berlin | The capital of Germany that was divided by the Berlin Wall; the eastern part of Berlin was communist while the western part of Berlin was democratic. |
| West Germany | The democratic area of Germany after the Potsdam Conference. |
| East Germany | The communist area of Germany after the Potsdam Conference. |