The Duchy of Holstein was established by a Scandinavian monarch under what union?
Duchy of Holstein The Duchy of Holstein (German: "Herzogtum Holstein" , Danish: "Hertugdømmet Holsten" ) was the northernmost state of the Holy Roman Empire, located in the present German state of Schleswig-Holstein. It was established when King Christian I of Denmark had his County of Holstein-Rendsburg elevated to a duchy by Emperor Frederick III in 1474. Holstein was ruled jointly with the Duchy of Schleswig by members of the Danish House of Oldenburg for its entire existence.
Sweden in Union with Norway The Union between Sweden and Norway is an overriding theme of the history of Sweden in the 19th century. On 4 November 1814, the kingdoms of Sweden and Norway formed a personal union under one king. The two countries had completely separate institutions, except for the foreign service led by the king through the Swedish foreign minister.