Russia was drawn out of World War I by what crisis?

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All of these factors contributed to Russia's withdrawal from World War I. The abdication of Tsar Nicholas II in 1917 led to a power vacuum and political instability. The provisional government that took over was weak and failed to address the country's problems, including continuing the war effort. The Bolsheviks, led by Vladimir Lenin, capitalized on this instability, seizing power in October 1917 and prioritizing an exit from the war to focus on internal issues, which eventually led to the signing of the Treaty of Brest-Litovsk in 1918. The civil war that ensued further distracted and drained Russia, making continued participation in World War I untenable.

Russia Was Drawn Out of World War I by What