What happened during the cold war era?

The Cold War was an ongoing political rivalry between the United States and the Soviet Union and their respective allies that developed after World War II ... It was waged mainly on political, economic, and propaganda fronts and lasted until 1991.

The Cold War was a period of geopolitical tension between the Soviet Union with its satellite states (the Eastern Bloc), and the United States with its allies (the Western Bloc) after World War II ... The Cold War began to de-escalate after the Revolutions of 1989.