1655
In the history of Poland and Lithuania, the Deluge refers to a series of wars in the mid-to-late 17th century that left the Polish-Lithuanian Commonwealth in ruins.
The Deluge refers to the Swedish invasion and occupation of the western half of Poland-Lithuania from 1655 to 1660 and the Khmelnytskyi Uprising in 1648, which led to Russia's invasion during the Russo-Polish War.
Read more about this topic: Territorial Evolution Of Poland