Answer
The Peace of Thorn, also known as the First Peace of Thorn, was signed on February 11, 1411, following the Battle of Grunwald between the Kingdom of Poland and the Grand Duchy of Lithuania on one side and the Teutonic Knights on the other. The treaty marked a significant turning point in the Polish–Lithuanian–Teutonic War and brought a temporary end to the conflict, although tensions between the parties persisted.