German philosopher, political economist, historian, sociologist, humanist, political theorist, and revolutionary credited as the founder of communism. Marx summarized his approach to history and politics
Karl Kautsky (16 October 1854-17 October 1938), was one of the best-known theoreticians of the Second International and until 1914 he was thought by many
1872-1952 “Alexandra Kollontai” by Tom Condit Russian Social-Democrat from the 1890s, active in international Socialist Women’s movement, and a member of the Mensheviks before 1914.