::Treaty of Roskilde


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In red: Halland, previously occupied by Sweden for a 30-year period under the terms of the Peace of Brömsebro (1645), was now permanently ceded. In yellow: Skåne, Blekinge and Bohuslän also became Swedish. In purple: Trøndelag and Bornholm provinces, which were ceded to Sweden in 1658, but rebelled and returned to Danish-Norwegian rule in 1660.
The treaty permanently shifted the balance of power within Scandinavia, making Sweden the most powerful country based on both population and land area.

The Treaty of Roskilde<ref></ref> was concluded on 26 February (OS) or 8 March 1658 (NS)<ref name=Frost180>{{#invoke:citation/CS1|citation |CitationClass=book }}</ref> during the Second Northern War between Frederick III of Denmark–Norway and Charles X Gustav of Sweden in the Danish city of Roskilde. After a devastating defeat, Denmark-Norway was forced to give up a third of its territory to save the rest, the ceded lands comprising Blekinge, Bornholm, Bohuslän (Båhuslen), Scania (Skåne) and Trøndelag, as well as her claims to Halland.<ref name=Frost180/>

After the treaty entered into force, Swedish forces continued to campaign in the remainder of Denmark-Norway, but had to withdraw from the Danish isles and Trøndelag in face of a Danish-Norwegian-Dutch alliance. The Treaty of Copenhagen restored Bornholm to Denmark and Trøndelag to Norway in 1660, while the other provinces transferred in Roskilde remain Swedish to this day.

Treaty of Roskilde sections
Intro  Background  Provisions  Aftermath  See also  References  External links  

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