Which of the following best explains why the Red Army won the Russian Civil War?
A The White Army withdrew from Crimea and this allowed the Red Army to successfully fight them one last time.
B The White Army ultimately did not have enough help from outside countries to fight the Red Army successfully.
C The Red Army used its Red Terror program throughout Russia in order to take out political opponents and strengthen themselves.
D Although many groups opposed the Bolsheviks, the White Army was not very unified and this made it harder to have success in the war.