Final answer:
Lenin installed the Bolsheviks to govern Russia.
Step-by-step explanation:
The left-wing Marxist socialist group that Lenin installed to govern Russia was the Bolsheviks. The Bolsheviks, led by Vladimir Lenin, emerged during the Russian Revolution of 1917 and seized power in October of that year. They established a new government, known as the Soviet Union, which sought to create a socialist society based on Marxist principles.
Learn more about Bolsheviks in Russia