 Complete the following phrase:  In February 1440 the nobility of Warmia and the town of Braunsberg Braniewo co-founded the Prussian Confederation, which opposed Teutonic rule, and most towns of the Prince-Bishopric joined the organization in May 1440. In February 1454, the organization asked Polish King Casimir IV Jagiellon to incorporate the region to the Kingdom of Poland, to which the king agreed and signed the act of incorporation in Kraków on 6 March 1454, and the 