<human>:  Why did the Bolsheviks win the Russian Civil War?
<bot>: The Bolsheviks won because they had the support of the working class. They were able to gain control of the factories and the railroads, and they were able to win the support of the soldiers. The workers were tired of the old Tsarist regime and the war, and the Bolsheviks promised them land, bread, and peace.