History
Silesia entered written history as a Slavic land absorbed into the early Polish state, and Wrocław received a bishopric in 1000. After 1138 it passed to the Silesian branch of the Piast dynasty, whose dukes invited German settlers, founded towns and split the land into many small duchies. In 1335 the duchies came under the Bohemian crown, and with Bohemia they passed in 1526 to the Habsburgs. Frederick the Great seized most of Silesia for Prussia in 1742, and it became a German province, its south-east transformed in the 19th century into one of Europe's great coal and steel districts.
After the First World War, Upper Silesia was disputed: three Silesian uprisings and a 1921 plebiscite ended with its partition, giving Katowice to Poland as an autonomous province with its own parliament. Lower Silesia and Opole stayed German.
In 1945 the front reached Breslau, which the Germans held as a fortress city under a siege that wrecked it. The Potsdam settlement gave almost all Silesia to Poland; most Germans were expelled and replaced by Poles, including many from Lwów, which had passed to the Soviet Union and whose Ossolineum library moved to Wrocław. Upper Silesians who were judged Polish stayed, and around Opole a German minority remains. Under communism the Katowice coalfield powered the economy, and since 1989 its mines have been closing while Wrocław has grown into one of Poland's most dynamic cities.
