Silesians is both a linguistic as well as a geographical term for the inhabitants of Silesia, a historical region in Central Europe divided by the current national boundaries of Poland, Germany, and the Czech Republic. Historically, the region of Silesia has been inhabited by Polish, Czechs, and Germans. Therefore, the term Silesian can refer to anyone of these ethnic groups. However, in 1945, great demographic changes occurred in the region as a result of the Potsdam Agreement leaving most of the region ethnically Polish and/or Slavic Upper Silesian. The names of Silesia in different languages most likely share their etymology—Polish: ; German: Schlesien pronounced [ˈʃleːzi̯ən] ; Czech: Slezsko ; Lower Silesian: Schläsing; Silesian: Ślōnsk ; Lower Sorbian: Šlazyńska ; Upper Sorbian: Šleska ; Latin, Spanish and English: Silesia; French: Silésie; Dutch: Silezië; Italian: Slesia; Slovak: Sliezsko; Kashubian: Sląsk. The names all relate to the name of a river and mountain in mid-southern Silesia, which served as a place of cult for pagans before Christianization.