Rosa Luxemburg, German economist, theorist, and philosopher (born 1871)

Rosa Luxemburg was a Polish and naturalised-German Marxist theorist, philosopher, economist, and revolutionary socialist. A member of the Social Democracy of the Kingdom of Poland and Lithuania (SDKPiL), the Social Democratic Party of Germany (SPD), and the Communist Party of Germany (KPD), she became a leading theorist of the SPD and a prominent figure in the Second International. An anti-imperialist, anti-militarist, and foremost thinker of democracy within the Marxist tradition, she is best known for her major theoretical work, The Accumulation of Capital (1913), and for her revolutionary leadership of the Spartacus League during the German Revolution of 1918–1919.