She argued that capitalism could survive only by constantly consuming non-capitalist societies at its borders.
Rosa Luxemburg was born in Zamość, Russian Poland, in 1871. She emigrated to Switzerland at eighteen, earned a doctorate in political economy from the University of Zurich in 1897, and moved to Germany, where she became one of the most prominent voices in the Social Democratic Party.1
Her 1913 work The Accumulation of Capital addressed a question that had puzzled economists: how does capitalism continue to expand when its own workers cannot afford to buy everything it produces? Luxemburg’s answer was that capitalism requires access to non-capitalist markets, absorbing peasant economies, colonial territories, and pre-industrial societies to sustain its growth.2
The implication was structural. Capital did not grow through internal efficiency alone. It needed an outside, a population whose labor and resources could be drawn into the system. When no more external populations remained, the system would face a crisis of accumulation.3
Luxemburg opposed World War I and was imprisoned for most of it. In 1918, she co-founded the Spartacist League and then the Communist Party of Germany. She argued for democratic socialism and mass strikes, opposing both the reformism of mainstream social democrats and the authoritarian centralism she saw developing in the Bolshevik model.4
On January 15, 1919, Luxemburg and Karl Liebknecht were captured by members of the Freikorps, a right-wing paramilitary group, beaten, and murdered. Luxemburg’s body was thrown into the Landwehr Canal in Berlin.5 She was forty-seven. Her analysis of how capitalist economies depend on incorporating external labor and resources anticipated twenty-first-century debates about globalization, supply chains, and the limits of growth.