Upper Silesia instance of historical region
Upper Silesia (Polish: Górny Śląsk; Silesian: Gůrny Ślůnsk, Gōrny Ślōnsk; Czech: Horní Slezsko; German: Oberschlesien; Silesian German: Oberschläsing; Latin: Silesia Superior) is the southeastern part of the historical and geographical region of Silesia, located today mostly in Poland, with small parts in the Czech Republic.
Since the 9th century, Upper Silesia has been part of (chronologically) Greater Moravia, the Duchy of Bohemia, the Piast Kingdom of Poland, again of the Lands of the Bohemian Crown and the Holy Roman Empire, as well as of the Habsburg monarchy from 1526. In 1742 the greater part of Upper Silesia was annexed by the Kingdom of Prussia, and in 1871 it became part of the German Empire. After the First World War the region was divided between Poland (East Upper Silesia) and Germany (West Upper Silesia). After the Second World War, West Upper Silesia also became Polish as the result of the Potsdam Conference. After the war, a lot of additional Poles were settled in Upper Silesia, these were Polish people displaced from the former Polish territories incorporated into the USSR, Polish settlers from other parts of Poland, as well as masses of Poles looking for work in the years 1945–1989.Geography
Upper Silesia is situated on the upper Oder River, north of the Eastern Sudetes mountain range and the Moravian Gate, which form the southern border with the historic Moravia region. Within the adjacent Silesian Beskids to the east, the Vistula River rises and turns eastwards, the Biała and Przemsza tributaries mark the eastern border with Lesser Poland. In the north, Upper Silesia borders on Greater Poland, and in the west on the Lower Silesian lands (the adjacent region around Wrocław also referred to as Middle Silesia).It is currently split into a larger Polish and the smaller Czech Silesian part, which is located within the Czech regions of Moravia-Silesia and Olomouc. The Polish Upper Silesian territory covers most of the Opole Voivodeship, except for the Lower Silesian counties of Brzeg and Namysłów, and the western half of the Silesian Voivodeship (except for the Lesser Polish counties of Będzin, Bielsko-Biała, Częstochowa with the city of Częstochowa, Kłobuck, Myszków, Zawiercie and Żywiec, as well as the cities of Dąbrowa Górnicza, Jaworzno and Sosnowiec).
Divided Cieszyn Silesia as well as former Austrian Silesia are historical parts of Upper Silesia.
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