QUIZ: How Much Do You Know About The Soviet Union?
When did the USSR officially form?

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In 1922, Soviet Russia signed a treaty with the Ukraine, Transcaucasia, and Belarus. This officially formed the Union of Soviet Socialist Republics (USSR). At its height, the USSR would have 15 socialist countries.
DAVID GANNON/AFP via Getty Images
DAVID GANNON/AFP via Getty Images
When did the USSR officially form?
- 1920
- 1930
- 1922
- 1917