Silesia (Polish: Śląsk, Czech: Slezsko) is a historical landscape, which today is mainly located in the extreme southwest of Poland, but in parts also on the territory of Germany and the Czech Republic. By far the most significant river is the Oder. To the south, Silesia is bordered mainly by the Sudeten and Beskid mountain ranges. Today, almost 8 million people live in Silesia. The largest cities in the region are Wrocław, Opole and Katowice. Before 1945, most of the region was part of Prussia for two hundred years, and before the Silesian Wars (from 1740) it was part of the Habsburg Empire for almost as many years. Silesia is classified into Upper and Lower Silesia.
Austria-Hungary (Hungarian: Osztrák-Magyar Monarchia), also known as Imperial and Royal Hungary Monarchy, was a historical state in Central and Southeastern Europe that existed from 1867 to 1918.
The Kingdom of Prussia existed from 1701 to 1918 and was reigned by the Hohenzollern dynasty. The country was an absolute monarchy from its founding until 1848 and a constitutional monarchy from 1848 until its dissolution. The capital of the Kingdom of Prussia was Berlin. The land was inhabited by about 40 million people. After the November Revolution of 1918 and the abdication of Wilhelm II, the Kingdom dissolved and formed the Free State of Prussia.
The Czech Republic is a country in Central Europe with a population of about 10.5 million people. The capital and largest city of the country is Prague. In the Czech Republic lie the historical landscapes of Bohemia, Moravia and parts of Silesia. In 1918 the state of Czechoslovakia was formed, but the Czech Republic was not founded until 1993. The country has been a member of the EU since 01.05.2004.
Poland is a state in Central Eastern Europe and is home to approximately 38 million people. The country is the sixth largest member state of the European Union. The capital and biggest city of Poland is Warsaw. Poland is made up of 16 voivodships. The largest river in the country is the Vistula (Polish: Wisła).