Identify how the Russian Revolution affected World War I and led to US involvement in the war.
A. The United States joined in to help since Germany was no longer fighting on two fronts.
B. The United States was attacked during the Russian Revolution.
C. The Russian Revolution ended the Eastern Front of the war.
D. Germany was able to stop fighting on the Eastern Front and focus its attention on the Western Front.
E. The United States became involved to fight communists in Russia.
Since the Russian Revolution caused Russia to pull out of WW1, Germany focused its attention now only on the eastern front, as before they were fighting on 2 fronts at the same time.