History of Soviet Russia and the Soviet Union (1917–1927)

The ten years 1917–1927, saw a radical transformation of the Russian Empire into a socialist state, the Soviet Union: initially called Soviet Russia from 1917 to 1922 and then the Soviet Union from 1922 onward. This period spanned the 1917 Russian revolutions to Joseph Stalin's rise to power in 1927.

Source: Wikipedia — History of Soviet Russia and the Soviet Union (1917–1927) (CC BY-SA 4.0)