What events led to the downfall of the soviet union?

The unsuccessful August 1991 coup against Gorbachev sealed the fate of the Soviet Union.

Explanation:

Planned by hard-line Communists, the coup diminished Gorbachev's power and propelled Yeltsin and the democratic forces to the forefront of Soviet and Russian politics.

industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations.

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