Which was not a critical event during the late stages of the Cold War from 1968 to 1991?


breakup of the Soviet Union into Commonwealth of Independent States

invasion of Czechoslovakia by Soviet troops to crush Prague Spring

launch of Truman Doctrine in order to contain spread of communism

boycott by the U.S.S.R. of the 1984 Olympic games in Los Angeles

4 answers

And your answer is?
I said my answer was invasion of Czechoslovakia by Soviet troops to crush Prague Spring
What was Prague Spring? When did it occur?
It happened in 1968, but wasn't it peaceful? The answer choice says it was crushed.