Treaty of Oliva is established between Sweden and Poland.

Treaty of Oliva

1660 peace treaty to end the Second Northern War

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…