Karl Marx

Marx and Engels published the Manifesto of the Communist Party, calling for the overthrow of bourgeois society and the establishment of a classless society. The pamphlet's closing line 'Workers of the world, unite!' became a rallying cry for socialist and communist movements worldwide.

After the failure of the 1848 revolutions, Marx was expelled from Prussia and France and settled in London. He lived in poverty while researching at the British Museum, writing Das Kapital, and organizing the International Workingmen's Association (First International).

Marx helped found the International Workingmen's Association (First International) in London, uniting socialist, communist, and anarchist groups from across Europe. He wrote its inaugural address and served on its General Council, shaping its political direction until its dissolution in 1876.

Marx published the first volume of his magnum opus, Das Kapital, a critical analysis of political economy. He developed the labor theory of value, the concept of surplus value, and the theory of capitalist crisis. The work became the foundational text of Marxist economics.