Historedia
EuropeEvent

Treaty of Brömsebro

When
1645
Where
Brömsebro
Episodes
1

The Treaty of Brömsebro, signed on 13 August 1645, ended the Torstenson War between Sweden and Denmark–Norway. Denmark–Norway ceded Jämtland, Härjedalen, Gotland, and Ösel to Sweden following Swedish military pressure.

Episodes

  1. 13 August 1645 · BrömsebroSigning of the Treaty

    Sweden and Denmark–Norway signed the Treaty of Brömsebro on 13 August 1645, formally ending the Torstenson War.

Background and detail

Background. The Torstenson War, a local conflict beginning in 1643 and part of the Thirty Years' War, pitted Sweden against Denmark–Norway. Swedish military strength ultimately compelled Denmark–Norway to accept Swedish demands, leading to peace negotiations that started in February 1645.

Territorial Terms. Under the treaty, Denmark–Norway ceded the Norwegian provinces of Jämtland and Härjedalen to Sweden. Additionally, the Danish Baltic Sea islands of Gotland and Saaremaa (Ösel) were transferred to Swedish control, significantly altering the regional balance of power.

Sources

  1. Treaty of Brömsebro (1645) Wikipedia, revision of 2026-04-23

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.