Vladimir Lenin (1870-1924) was a pivotal figure in world history, best known for leading the Bolshevik Revolution in Russia and founding the Russian Soviet Federative Socialist Republic, which later became the Soviet Union. A prominent Marxist, Lenin's writings and revolutionary activities profoundly influenced communist movements worldwide. His major works, including "The State and Revolution" and "What Is to Be Done?," explored class struggle and political theory, emphasizing the need for a proletarian-led overthrow of capitalism. As the head of the Soviet state, Lenin implemented socialist policies that shaped the trajectory of 20th-century political thought and practice, leaving a lasting legacy.