The Bolshevik Revolution in Russia was led by Vladimir Lenin in 1917. It was a pivotal moment in the Russian Revolution, where the Bolsheviks, a faction of the Socialist Democratic Labor Party, seized control of the government from the Provisional Government that had replaced the Tsar following his abdication. Lenin's leadership and Marxist ideology focused on the interests of the proletariat and agrarian workers. The revolution established a socialist regime, resulting in the creation of the Soviet Union, significantly changing Russia's political landscape and influencing global communist movements in the subsequent decades.