The Union of Soviet Socialist Republics was formed on the 30th of December, 1922
USSR or the Soviet Union was a Marxist-Leninist state that existed between 1922 and 1991. It was a union of multiple Soviet republics, however its government and economy were centralized. The state was governed by the Communist Party.
The history of the Soviet Union dates back to 1917 during the October Revolution. The Tsar of Russia was deposed.
What do you think about revolutions in general? Is any revolution equal to a civil war?