History of the Soviet Union
The history of the Soviet Union (USSR) (1922–1991) began with the ideals of the Russian Bolshevik Revolution and ended in dissolution amidst economic collapse and political disintegration. Established in 1922 following the Russian Civil War, the Soviet Union quickly became a one-party state under the Communist Party.
Source: Wikipedia — History of the Soviet Union (CC BY-SA 4.0)