Convention of Moss

The Convention of Moss was a cease fire agreement, signed on 14 August 1814 between the Swedish King and the Norwegian government. It followed the Swedish-Norwegian War due to Norway's claim to sovereignty. It also became the de facto peace agreement and formed the basis for the personal union between Sweden and Norway that was established when the Norwegian Storting elected Charles XIII of Sweden as king of Norway on 4 November 1814. The Union lasted until Norway declared its dissolution in 1905.

In 1814, Denmark–Norway was on the losing side in the Napoleonic wars. On 14 January 1814, at the Treaty of Kiel, Norway was ceded to the king of Sweden. In an attempt to take control of their destiny the Norwegians convened a constitutional assembly at Eidsvoll, and on 17 May 1814 signed the Constitution of Norway. The viceroy and heir to the thrones of Denmark and Norway, prince Christian Frederik, was elected by the assembly as king.

Wikipedia