What other country besides Poland contains part of the historical and geographical region where Buława is located?
Buława, Opole Voivodeship Buława , German Buhlau, is a village in the administrative district of Gmina Strzeleczki (Gemeinde Klein Strehlitz), within Krapkowice County, Opole Voivodeship, in the south-western region of Upper Silesia in Poland. It lies approximately 5 km south of Strzeleczki (Klein Strehlitz), 10 km south-west of Krapkowice, and 28 km south of the regional capital Opole.
Sorbs Sorbs (Upper Sorbian: "Serbja" , Lower Sorbian: "Serby" , German: "Sorben" ), known also by their former autonyms Lusatians and Wends, are an West Slavic ethnic group predominantly inhabiting their homeland in Lusatia, a region divided between Germany (the states of Saxony and Brandenburg) and Poland (the provinces of Lower Silesia and Lubusz). According to Constantine VII Porphyrogennetos, Serbs from the Balkan peninsula have the same orgins as Lusatians and Kashubians. He also claims that Serbs inhabitated the areas between the rivers Elbe and Vistula, on the southern coast of the Baltic sea. They traditionally speak the Sorbian languages (also known as "Wendish" and "Lusatian"), closely related to the Polish, the Kashubian, the Czech and the Slovak. Sorbian is an officially recognized minority language in Germany. The Sorbs are linguistically and genetically closest to the Czechs and Poles. Due to a gradual and increasing assimilation between the 17th and 20th centuries, virtually all Sorbs also spoke German by the late 19th century and much of the recent generations no longer speak the language. The community is divided religiously between Roman Catholicism (the majority) and Lutheranism. An indicator of the degree of assimilation is the fact that the current Prime Minister of Saxony is a Sorb, Stanislaw Tillich – who speaks the Sorbian as well as the Polish.