Southern Jutland after the city of Schleswig ("Slesvig"). The dukes of Schleswig also became kings of Denmark. With the demise of the Holy Roman Empire in the 19th century, the term "Sønderjylland" was revived by Denmark and became the subject of a naming dispute between Danes and Germans (the latter continuing the centuries-old "Schleswig") - part of the struggle over possession of the territory itself, which came to war in 1848 and again in 1864. Following the Schleswig Plebiscites in 1920, South Jutland was divided into Northern and Southern Schleswig. Northern Schleswig was also known as South Jutland County (1970–2006) and is
European Plain and to the southeast - the Mediterranean basin. To the south of the Middle European Plain stretch the central uplands and plateaus of Europe elevating to the peaks of the Alps and the Carpathian Mountains. To the northwest across the English Channel lie the British Isles, while across several straits north of the Jutland Peninsula lies the Scandinavian Peninsula which is part of the Fennoscandia ecoregion. Most of the plain lies in the temperate broadleaf and mixed forest biome, while its far eastern portion extends into steppe of the ecoregion Eurasian Steppe. Beside the Great European Plain there is number