What happened during the russian revolution? a. mikhail gorbachev instituted social and political reforms. b. the soviet union was dissolved into 15 independent nations. c. vladimir lenin and the communists overthrew the russian tsar. d. joseph stalin made widespread cultural and economic changes.

The correct answer is C. Vladimir Lenin and the communists overthrew the Russian tsar.

Explanation:

The Russian Revolution took place in 1917, when Vladimir I. Lenin and the Red Army faced and overthrew the tsar and the White Army.

A is incorrect because the reforms were instaured by Gorbachev during the decades of 1980 and the beginning of the 1990's. B was a result of the reforms so it is also incorrect, while C is incorrect because Stalin ruled the USSR between 1922 and 1952, so his tenure started 5 years after the Revolution.

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