The communists succeeded in overthrowing the provisional government in the november 1917 revolution because

The communists succeeded in overthrowing the Provisional Government in the November 1917 revolution because the Provisional government not only lost the faith and trust of the people of Russia, but they also lost the support of the army. On the other hand, the communists gained the support of the Russian people and this helped in overthrowing the Provisional government. The differences between the Mensheviks and the Bolsheviks also get resolved and this strengthened the hands of the Communist people of Russia.

The statistics for the eastern war are grim. more than three-million men died in the fighting, more than nine-million men were wounded, and every major country which participated lost its form of government.