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Which Neisse River forms part of the Polish-German border?
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The Lusatian Neisse (Nysa Åużycka) is the river that forms part of the German-Polish border. This river is the longer and more westerly of the two Neisse rivers, flowing 157 miles (252 km) from the northern Czech Republic into the Oder River. The Oder-Neisse Line, established after World War II, follows this river southward from where it joins the Oder River to the Czechoslovakian border. The other Neisse River, the Nysa KÅodzka (Glatzer Neisse), is shorter and flows entirely within Poland.123