Gorbachev's subsequent reforms permitted the formation of political parties and increasingly gave local and regional authorities more authority and influence than the federal government.
Gorbachev's decision to permit multi-party elections and establish a presidential system for the Soviet Union marked the beginning of a gradual democratization process that ultimately undermined Communist rule and contributed to the fall of the Soviet Union.
The Soviet Union was under internal threat from rising nationalist sentiment, which prompted Marxist-Leninist hardliners to attempt the attempted August Coup against Gorbachev in 1991.
As a result, Gorbachev resigned and the Soviet Union disintegrated against his desires.
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