Lusatia

n. area of central Europe in east Germany and southwest Poland (between the Elbe and Oder rivers)

Lusatia (, , , , ) is a historical region between the Bóbr and Kwisa rivers and the Elbe river in the eastern German states of Saxony and Brandenburg, south-western Poland (Lower Silesian Voivodeship) and the northern Czech Republic.The name derives from a Sorbian word meaning "swamps/water-hole".
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