Herjedalen to Sweden, as a result of numerous wars between Denmark–Norway and Sweden. To the north, however, its territory was increased by the acquisition of the northern provinces of Troms and Finnmark, at the expense of Sweden and Russia.
The famine of 1695–96 killed roughly 10% of Norway's population. At least nine severe harvest failures were recorded in the Scandinavian countries between 1740 and 1800, each resulting in a substantial rise of the death rate.
Union with Sweden (19th century)
After Denmark–Norway was attacked by the United Kingdom at the Battle of Copenhagen, it entered into an alliance with Napoleon, with the war leading to dire conditions and mass starvation in 1812. As the Danish kingdom found itself on the losing side in 1814, it was forced, under terms of the Treaty of Kiel, to cede Norway to the king of Sweden, while the old Norwegian provinces of Iceland, Greenland and the Faroe Islands remained with the Danish crown.
Norway took this opportunity to declare independence, adopted a constitution based on American and French models, and elected the Crown prince of Denmark and Norway, Christian Frederick, as king on 17 May 1814. This is the famous Syttende Mai (Seventeenth of May) holiday celebrated by Norwegians and Norwegian-Americans alike. Syttende Mai is also called Norwegian Constitution Day.
Norwegian opposition to the great powers' decision to link Norway with Sweden caused the Norwegian-Swedish War to break out as Sweden tried to subdue Norway by military means. As Sweden's military was not strong enough to defeat the Norwegian forces outright and Norway's treasury was not large enough to support a protracted war, and as British and Russian navies blockaded the Norwegian coast, the belligerents were forced to negotiate the Convention of Moss. According to the terms of the convention, Christian Frederik abdicated the Norwegian throne and authorized the Parliament of Norway to make the
