Lower Silesia

Lower Silesia (Polish: Dolny Śląsk [ˈdɔlnɨ ˈɕlɔ̃sk]; Czech: Dolní Slezsko; German: Niederschlesien [ˈniːdɐˌʃleːzi̯ən] ^ⓘ; Silesian: Dolny Ślōnsk; Upper Sorbian: Delnja Šleska [ˈdɛlnʲa ˈʃlɛska]; Lower Sorbian: Dolna Šlazyńska [ˈdɔlna ˈʃlazɨnʲska]; Lower Silesian: Niederschläsing; Latin: Silesia Inferior) is a historical and geographical region mostly located in Poland with small portions in the Czech Republic and Germany. It is the western part of the region of Silesia. Its largest city is Wrocław.

The first state to have a stable hold over the territory of what will be considered Lower Silesia was the short-lived Great Moravia in the 9th century. Afterwards, in the Middle Ages, Lower Silesia was part of Piast-ruled Poland. It was one of the leading regions of Poland, and its capital Wrocław was one of the main cities of the Polish Kingdom. Lower Silesia emerged as a distinctive region during the fragmentation of Poland in 1172, when the Duchies of Opole and Racibórz, considered Upper Silesia since, were formed of the eastern part of the Duchy of Silesia, and the remaining, western part was since considered Lower Silesia. The oldest Polish writing and first Polish print were created in the region. During the Ostsiedlung, the Piast rulers invited German settlers to settle in the region, which until then had a Polish majority. As a result, the region became largely German-speaking by the end of the 15th century.

With the Treaty of Trentschin the region fell under the overlordship of the Bohemian Crown in 1335 and thus became part of the Holy Roman Empire. Large parts remained under the rule of local Polish dukes of the Piast, Jagiellonian and Sobieski dynasties, some up to the 17th and 18th century. Briefly under the suzerainty of the Kingdom of Hungary, Lower Silesia fell to the Austrian Habsburg monarchy in 1526.

In 1742, Austria ceded nearly all of Lower Silesia to the Kingdom of Prussia in the Treaty of Berlin, except for the southern part of the Duchy of Neisse. Within the Prussian kingdom, the region became part of the Province of Silesia. In 1871, the Prussian-controlled portion of Lower Silesia was integrated into the German Empire. After World War I, Lower Silesia was divided, as small parts were reintegrated with Poland and Czechoslovakia, which both regained independence. In the interbellum, the Polish minority of the region was persecuted in the German-controlled part of the region.

After Germany's defeat in World War II in 1945, most of the region became once again part of Poland, while a smaller part west of the Oder-Neisse line became part of East Germany and Czech Lower Silesia (Jesenicko and Opavsko regions) remained as a part of Czechoslovakia. By 1949, almost the entire pre-war German population was expelled in accordance with the Potsdam Agreement. Poles displaced from the former Polish lands incorporated into the USSR settled in Lower Silesia after the war, as well as Polish settlers from other parts of Poland.

The region is known for its historic architecture of various styles, including many castles and palaces, well preserved or reconstructed old towns, numerous spa towns, and historic burial sites of Polish monarchs and consorts (in Wrocław, Legnica and Trzebnica).

Lower Silesia is located mostly in the basin of the middle Oder River with its historic capital in Wrocław.

The southern border of Lower Silesia is mapped by the mountain ridge of the Western and Central Sudetes, which since the High Middle Ages formed the border between Polish Silesia and the historic Bohemian region of the present-day Czech Republic. The Bóbr and Kwisa rivers are considered being the original western border with the Lusatias, however, the Silesian Duchy of Żagań reached up to the Neisse river, including two villages (Pechern and Neudorf) on the western shore, which became Silesian in 1413.