OstravaOstrava (‘ostrava; Ostrawa, Ostrau ˈɔstʁaʊ) is a city in the north-east of the Czech Republic, and the capital of the Moravian-Silesian Region. It has about 280,000 inhabitants. It lies from the border with Poland, at the confluences of four rivers: Oder, Opava, Ostravice and Lučina. Ostrava is the third largest city in the Czech Republic in terms of both population and area, the second largest city in the region of Moravia, and the largest city in the historical land of Czech Silesia.
SudetenlandThe Sudetenland (suːˈdeɪtənlænd , zuˈdeːtn̩ˌlant; Czech and Sudety) is the historical German name for the northern, southern, and western areas of former Czechoslovakia which were inhabited primarily by Sudeten Germans. These German speakers had predominated in the border districts of Bohemia, Moravia, and Czech Silesia since the Middle Ages. Since the 9th century Sudetenland had been an integral part of the Czech state (first within the Duchy of Bohemia and later the Kingdom of Bohemia) both geographically and politically.
SilesiaSilesia (saɪˈliːʒə,saɪˈliːʃiə, also UK-iːziə, US-iːʒiə,-iːʃə,_sɪˈ-; see below) is a historical region of Central Europe that lies mostly within Poland, with small parts in the Czech Republic and Germany. Its area is approximately , and the population is estimated at around 8,000,000. Silesia is split into two main subregions, Lower Silesia in the west and Upper Silesia in the east. Silesia has a diverse culture, including architecture, costumes, cuisine, traditions, and the Silesian language (minority in Upper Silesia).