The white army was supported by Germans
Step-by-step explanation:
The causes of Russia's Civil War were the failure of provisional government of Kerensky, the growing power of the soviets, the treaty of Brest-Litovsk angered Russians, and the Bolsheviks wanted to wipe out all their enemies. Bolsheviks was the red army and they had a tremendous victory over the whites.
It was the white army which were the non supporters of communism had got favored from German Army and Germans were a great threat to the Bolsheviks. At the end of the civil war white army left Russia.