Mosty u Českého Těšína (Polish: Mosty koło Cieszyna ) (1920-1949: Mosty)[1] is a village in Karviná District, Moravian-Silesian Region, Czech Republic. Polish ( język polski, polszczyzna) is the Official language of Poland. Karviná District (Okres Karviná Powiat Karwina is a district ( Okres) within the Moravian-Silesian Region of the Czech Republic. Moravian-Silesian Region (Moravskoslezský kraj or Moravo-Silesian Region, is an administrative unit ( kraj) of the Czech Republic, located in the The Czech Republic ( ˈt͡ʃɛskaː ˈrɛpuˌblɪka short form in Česko ˈt͡ʃɛskɔ also called Czechia, It was a separate municipality but became administratively a part of Mistřovice in 1960 and later Český Těšín in 1975. ( Polish:) is a village in Karviná District, Moravian-Silesian Region, Czech Republic. Year 1960 ( MCMLX) was a Leap year starting on Friday (link will display full calendar of the Gregorian calendar. Český Těšín ( Czeski Cieszyn, Tschechisch-Teschen is a town in the Karviná District, Moravian-Silesian Region of the Czech Republic. Year 1975 ( MCMLXXV) was a Common year starting on Wednesday (link will display full calendar of the Gregorian calendar. It has a population of 1,217 (2005). [2]