Treaty of Altmark

The Treaty of Altmark, signed in 1629, ended hostilities between Sweden and Poland during the Polish-Swedish War. It established peace and defined territorial boundaries, with Sweden gaining significant control over parts of northern Poland and the Baltic Sea. The treaty also included a financial settlement, with Poland paying restitution to Sweden. This agreement was a crucial step in establishing Sweden as a major power in Northern Europe during the Thirty Years' War, emphasizing the importance of territorial disputes and economic interests in early modern conflicts.