Conversation so far:
when did the communist revolution in russia take place
The Russian Revolution was a period of sociopolitical revolution across the territory of the Russian Empire, commencing with the abolition of the monarchy in 1917, and concluding in 1923.
what country was created from the russian revolution
The Russian Revolution concluded in 1923 after the Bolshevik establishment of the Soviet Union, including national states of Ukraine, Azerbaijan and others, and the end of the Civil War.
how long did the soviet union exist
The Soviet Union, officially known as the Union of Soviet Socialist Republics, was a federal sovereign state in northern Eurasia that existed from 1922 to 1991.

Question: who succeeded the country
Self-contained rewrite: who succeeded the soviet union