Answer:
The Soviet Union weakened when he introduced reforms that promoted openness and restructuring of the government
Step-by-step explanation:
The collapse of the Soviet Union was caused by Mikhail Gorbachev's policies because "the Soviet Union weakened when he introduced reforms that promoted openness and restructuring of the government.
The reforms are known as " glasnost" and "perestroika" caused sociopolitical agitation across Eastern Europe in the 1980s. As a result, many citizens began to protest to topple and oust their Soviet-backed leaders. During this period, Gorbachev refused or did anything to prevent it.
Eventually, communist control we're weakened, and the nationalist independence movement took over.