Fnd Schleswig-Holstein refers to a region on the Jutland Peninsula bordering Denmark and Germany. It is also the name of one of 16 Bundeslands in Germany, bordering on Denmark and the North Sea and the Baltic Sea. The Danish name for this region is Slesvig-Holsten.
The northern part is called Schleswig whereas the southern part is called Holstein.
Northern Schleswig is part of Denmark and known as Sønderjylland, whereas Southern Schleswig is part of Germany. The Bundesland Schleswig-Holstein consists of Southern Schleswig and Holstein.
This region was the subject of a territorial dispute between Denmark and Germany during the 19th and early twentieth centuries. Because of the mix of Danes and Germans who lived there, the problem was considered intractable by many. Lord Palmerston said of the issue that only three people understood the Schleswig-Holstein question: one was dead, the other in an asylum and the third was himself, but he had forgotten it.
The German state of Prussia, with the help of Austria, acquired the territory from Denmark after defeating the Danes militarily in a short war fought during 1864. After World War I, Denmark reacquired part of that territory (Northern Schleswig) after a referendum in the region; the rest (The Bundesland Schleswig-Holstein)remained with Germany.
See the state's own website, http://www.schleswig-holstein.de/