Soviet Union: History, leaders and legacy

The Soviet Union was the world's first communist country and had a major influence on 20th-century history — and still has an influence today.

Propaganda poster : Karl Marx, Friedrich Engels, Lenin and Stalin, 1953.
A Soviet propaganda poster from 1953, showing Karl Marx, Friedrich Engels, Vladimir Lenin and Joseph Stalin
(Image credit: Apic via Getty Images)

The Soviet Union was the world's first communist country. It was established following a civil war in Russia that raged from 1917 to 1921. The Soviet Union controlled a vast amount of territory and competed with the United States in a conflict known as the Cold War, which at several moments put the world on the brink of a nuclear war and also drove the Space Race. 

The Soviet Union's full name was the "Union of Soviet Socialist Republics" or U.S.S.R. "Soviet" comes from the name for workers' councils, and the hammer and sickle on its red flag symbolically represented the labor of the country's workers. 

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Owen Jarus
Live Science Contributor

Owen Jarus is a regular contributor to Live Science who writes about archaeology and humans' past. He has also written for The Independent (UK), The Canadian Press (CP) and The Associated Press (AP), among others. Owen has a bachelor of arts degree from the University of Toronto and a journalism degree from Ryerson University.