Answer:
it pinned the Eastern Front and the germans against one another
Step-by-step explanation:
While the epoch-changing shifts of power were taking place in Russia, World War One was raging in Western and Eastern Europe between Germany and the Allies, starting in 1914. Before the October Revolution in 1917, the Allies offered enormous amounts of capital and military supplies to Russia to keep it in the war and Russia accepted. It "opened up an Eastern Front" against the Germans.