1521 peace agreement between the Teutonic Order and the Kingdom of Poland.
The Compromise of Thorn (also known as the Compromise of Toruń) on 5th of April, 1521, was a peace agreement between the Teutonic Order and the Kingdom of Poland. It was a direct response to the Polish–Teutonic War, a feud that had been going on between both countries for about two years.
Fifty-three years later, and tensions were still high between the two eastern European powers. Around January 1519, Polish forces near Kolo attacked towards Eastern Prussia, and kick-started the Polish–Teutonic War. Both countries were near-equal in military power, causing the war to mostly be a standstill for its three-year duration.
Part of the Compromise required both countries to partake in a four-year truce,[1] giving time for Holy Roman Emperor Charles V and Polish King Casimir IV Jagiellon to decide whether Albrecht, former and last leader of the Teutonic Knights, would have to do fealty and homage for Casimir. While no settlement was reached for the latter during that time, Albrecht continued to reach out for allies, most notably Martin Luther, who told Albrecht to abandon his Catholic ways and convert Prussia into a duchy.[2] He agreed, converted to Lutheranism, and dropped out of most positions he was in that related to Catholicism. The old Teutonic Order lost the majority of their power in the region, and eventually Albrecht would become the duke of the Duchy of Prussia.