Polish Border Strip

The term "Polish Border Strip" (German: Polnischer Grenzstreifen; Polish: polski pas graniczny) or "Polish Frontier Strip" refers to those territories which the German Empire wanted to annex from Congress Poland after World War I. It appeared in plans proposed by German officials as a territory to be ceded by the Kingdom of Poland to the German Empire after an expected German and Central Powers victory. German planners also envisioned forced expulsion and resettlement of the Polish and Jewish population which would be replaced by German colonists. The proposed area of the Border Strip comprised up to 30,000 km² (approximately the size of Belgium), and up to 3 million people were to be removed by the German Empire to make room for Germans. The strip was also intended to separate the Polish inhabitants of Prussian-held Greater Poland from those in Congress Poland.

The plan has been described by historian Hajo Holborn as the first instance in modern European history of removing whole populations as a planned solution to national conflicts.

In July 1917 the German supreme command under General Ludendorff, as part of the debate and planning regarding the cession of the "border strip" to Germany, specified its own designs in a memorandum. It proposed annexing a greatly enlarged "border strip" of 20,000 square kilometres, and removing the pre-existing Polish and Jewish population (numbering between 2,000,000 and 3,000,000) from a territory of 8,000 square kilometres and settling it with ethnic Germans. Poles living in Prussia, especially in the province of Posen, were to be "encouraged" by unspecified means to move into the German-ruled Kingdom of Poland.

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