When Ottokar followed Removing his father as King of Bohemia in 1253 , Béla , distrustful of his rising Cause_change_of_position_on_a_scale power , claimed Statement the Styrian duchy .

However , in 1260 the conflict Hostile_encounter rekindled Recovering , after the Styrian nobility had revolted Change_of_leadership against the Árpáds and Ottokar campaigned Military_operation the duchy .

Instead , he declared Expressing_publicly religious parity for his subjects and , in 1583 , married Forming_relationships Agnes von Mansfeld-Eisleben , intending to convert Change the ecclesiastical principality into a secular , dynastic duchy .

charles x gustav then granted Giving frederick william full sovereignty in the duchy of prussia in return for military aid Assistance , and in the treaty of unk allied Collaboration himself with the transylvanian george ii UNK who invaded Attack unk from the southeast .