Social Democracy of the Kingdom of Poland and Lithuania

political party, Poland

Also known as: SDKP, SDKPiL

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July 13, 2026

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The Social Democracy of the Kingdom of Poland and Lithuania was a political party that emerged in the 1890s. It was a precursor to Polish communism and argued that national independence would not benefit the proletariat, as they were economically integrated into the partitioning states. Its leading theorist, Rosa Luxemburg, believed that the Polish proletariat's struggle for social justice and national liberation was intertwined. This ideology contrasted with the Polish Socialist Party (PPS), led by Józef Piłsudski, which emphasized the connection between social revolution and Poland's independence. The party's stance on national independence differed from other Polish political movements of the time.1

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Opposing such views was the Social Democracy of the Kingdom of Poland and Lithuania, the forerunner of Polish communism. Its leading theorist, Rosa Luxemburg, argued that national independence would not promote the interests of the proletariat, who were integrated economically into the three partitioning states.
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Opposing such views was the Social Democracy of the Kingdom of Poland and Lithuania, the forerunner of Polish communism. Its leading theorist, Rosa Luxemburg, argued that national independence would not promote the interests of the proletariat, who were integrated economically into the three partitioning states.
Read More