Final answer:
World War I ended for Russia with a popular revolution, the overthrow of the Tsarist state, and the emergence of the Bolsheviks as the ruling faction. Russia ultimately withdrew from the war and signed a peace treaty with Germany.
Step-by-step explanation:
World War I ended for Russia with a combination of factors. The war had become increasingly desperate for Russia, with the government teetering and morale low. The home front was in dire straits, with food shortages and inadequate munitions reaching the front lines. In this context, a popular revolution overthrew the Tsarist state, and Russia withdrew from the conflict. The revolution ultimately led to the emergence of the Bolshevik faction of Communist revolutionaries, who later signed a generous peace treaty with Germany in 1918.