Answer:
How was the revolution caused by WWI?
The effects of World War I gave rise to the Russian Revolution. In February and March 1917, a popular revolution forced the abdication of Tsar Nicholas II and the rise of a provisional government. This government, which kept Russia in the war, was itself overthrown by radical socialists just eight months later.
How did the revolution impact WWI?
The Russian Revolution had the effect of putting an end to the major arena of fighting on the Eastern Front in World War I. It temporarily helped the Germans by freeing up troops, but this advantage did not do the Germans much good. Therefore, the revolution did not really end up making much of a difference in the outcome of the war.