Lusatia

Lusatia, otherwise known as Sorbia, is a region in Central Europe, territorially split between Germany and Poland. Lusatia stretches from the Bóbr and Kwisa rivers in the east to the Pulsnitz and Black Elster rivers in the west, and is located within the German states of Saxony and Brandenburg and the Polish voivodeships of Lower Silesia and Lubusz. Major rivers of Lusatia are the Spree and the Lusatian Neisse, which defines the border between Germany and Poland. The Lusatian Mountains of the Western Sudetes separate Lusatia from Bohemia (Czech Republic) in the south. Lusatia is traditionally divided into Upper Lusatia, the hilly southern part, and Lower Lusatia, the flat northern part.

The areas east and west along the Spree in the German part of Lusatia are home to the Slavic Sorbs, one of Germany's four officially recognized indigenous ethnic minorities. The Upper Sorbs inhabit Saxon Upper Lusatia, and the Lower Sorbs Brandenburgian Lower Lusatia. Upper and Lower Sorbian are spoken in the German parts of Upper and Lower Lusatia respectively, and the signage there is mostly bilingual.