Question

which side wins the russian revolution? ¡¿qué bando gana la revolución rusa?

Explanation:

The Bolsheviks (led by Vladimir Lenin) won the Russian Revolution. They overthrew the Provisional Government (which had replaced the Tsarist autocracy after the February Revolution) in the October Revolution (Bolshevik Revolution) of 1917. After a subsequent civil war (1917 - 1922), the Bolsheviks established the Soviet Union, a socialist state.

Answer:

The Bolsheviks (or the revolutionary socialist side) won the Russian Revolution.