How did the Russian Revolution impact World War I? A. The Russians required the Allied Powers to come to their aid to defeat the radical groups. B. The Russians pulled out from the war, enabling the Germans to focus on the Western front. C. The Russians created new technological advancements that were used by the Allied Powers to win. D. The Russians created a new communist government that aligned with the Central Powers instead.

B. The Russians pulled out from the war, enabling the Germans to focus on the Western front.

Explanation:

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. ... Throughout WWI, the Germans were fighting a two-front war.

"they had a large area of land that they owned."