USSR loses power in Poland, Hungary, Czechoslovakia, Bulgaria, Romania (1989); Albania (1990); Yugoslavia (1991) (1 ene 1989 año – 1 ene 1991 año)

Descripción:

The aforementioned countries were able to break free from the Soviet Union and communism due to democratic elections and Gorbachev's new policies of glasnost or "political openness" and perestroika or "restructuring"

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