Treaty of Oliva is established between Sweden and Poland.
1660 peace treaty to end the Second Northern War
🗓️ 23 April 1660
The Treaty or Peace of Oliva was one of the peace treaties ending the Second Northern War (1655–1660). It was signed on 3 May [O.S. 23 April] 1660. The Treaty of Oliva, the Treaty of Copenhagen in the same year, and the Treaty of Cardis in the following year marked the high point of the Swedish Empire.
