Luxemburg helped found the Communist Party of Germany on January 1, 1919.
On January 1, 1919, Rosa Luxemburg played a pivotal role in founding the Communist Party of Germany (KPD), transforming the Spartacus League into a national political force aimed at radical reform. The foundation of the KPD marked a critical moment in German politics, as it sought to replace existing parliamentary systems with worker's councils. Luxemburg's leadership and theorizing were central to establishing the party's ideology, focusing on proletarian democracy and internationalism, and positioning the KPD prominently within the Weimar political landscape.