Lower Silesia (; ; ; ; ; ; Silesian German: Niederschläsing; ) 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.
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. During the Ostsiedlung, German settlers were invited to settle in the region, which until then had a Polish majority. As a result, the region became largely Germanised in the following centuries. Nonetheless, it remained a pioneering center of Polish culture, where the oldest Polish writing and first Polish print were created, and the first town rights were granted.
In the late Middle Ages the region fell under the overlordship of the Bohemian Crown, however large parts remained under the rule of local Polish dukes of the Piast dynasty, some up to the 16th and 17th century. Briefly, under the suzerainty of the Kingdom of Hungary, it 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 Nysa. 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.
After Germany's defeat in World War II in 1945, most of the region returned to Poland, while a smaller part west of the Oder-Neisse line became part of East Germany and Czech Lower Silesia (Jesenicko, 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 an abundance of 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).
Geography
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.
The later Silesian Province of Prussia further comprised the adjacent lands of historic Upper Lusatia ceded by the Kingdom of Saxony after the Napoleonic Wars in 1815, its westernmost point could be found as far west as the small village of Lindenau (now belonging to the German state of Brandenburg). To the north, Lower Silesia originally stretched up to Świebodzin and Krosno Odrzańskie, which was acquired by the Margraves of Brandenburg in 1482. The Barycz river forms the border with historic Greater Poland in the northeast, the Upper Silesian lands lie to the southeast.
Administratively Polish Lower Silesia is shared between Lower Silesian Voivodeship (except for the Upper Lusatian counties of Lubań and Zgorzelec, and former Bohemian Kłodzko), the southern part of Lubusz Voivodeship (i.e. the counties of Krosno Odrzańskie, Nowa Sól, Świebodzin, Żagań and Zielona Góra with the city of Zielona Góra, as well as western Opole Voivodeship (the counties of Brzeg, Namysłów and Nysa).