October 19, 1466
Second Peace of Thorn
The Second Peace of Thorn was a breakthrough peace treaty concluded on October 19, 1466, between the Kingdom of Poland and the Teutonic Order. As a result, Poland regained Pomerelia (Gdańsk Pomerania) and other territories, while the Teutonic state became a fief of the Polish Crown. The treaty ended the Thirteen Years' War and significantly changed the balance of power in Central Europe.