Answer: Gorbachev made reforms in the Soviet Union.
Step-by-step explanation:
The Revolution of 1989 were part of the revolution that brought about the end of communism. It was caused due to the fact that anti-communist challenged the government of the communist.
Before the revolutions of 1989, Gorbachev made reforms in the Soviet Union. The reform was as a result of the fact that Soviet system was bureaucratic and there was no freedom of speech.