Answer:
Almost from the very beginning of their rule, the Bolsheviks attempted to formally withdraw Russia from the WWI. They wanted to consolidate power because it was seen as a priority over the continuation of a conflict they judged to be an "imperialist" war. They negotiated the peace treaty of Brest-Litovsk which supposed colossal territorial losses for Rusia: they handed over Finland, Poland, Ukraine , the Baltic republics and Transcaucasia to the Central Powers; Russia ceded one third of the tsarist empire´s population, one-third of its agricultural land and three-quarters of its industries. The Russian withdrawal practically meant the end of the Eastern Front, thus elevating the pressure on France, Britain and other allies on the Western Front. It also helped ignite the White counterrevolutionary movement.
Step-by-step explanation: