Respuesta :
The series of democratic revolutions that swept the communist world led to the downfall of the soviet union, and opened markets in other nations occurred around option(b)i.e, 1990.
From 1922 to 1991, the Soviet Union, formally known as the Union of Soviet Socialist Republics, occupied a large portion of Eurasia. The Cold War, a rivalry between the Soviet Union and the United States that at times threatened nuclear war and inspired the Space Race, saw the Soviet Union in control of a sizable portion of the globe. "Union of Soviet Socialist Republics," or simply "USSR," was the official name of the Soviet Union.
Significant social and technological advancements and inventions were produced by the Soviet Union. The Soviet Armed Forces made up the largest standing force in the world and had the second-largest economy in the world. It was a signatory to the NPT and has the biggest nuclear arsenal in the world.
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The complete question is:
The series of democratic revolutions that swept the communist world, led to the downfall of the Soviet Union, and opened markets in other nations occurred around _____.
2010
1990
1950
1970