The southern third is made up of the German Bundesland of Schleswig-Holstein, with the duchies of Schleswig (also Sønderjylland/Southern Jutland) and Holstein. Both duchies have passed back and forth between the Danes and various German rulers. In the last border movement, Denmark regained North Schleswig ("Nordslesvig" in Danish) by plebiscite in 1920. Southern Schleswig remained German.