Original sentence: He participated in a mission to Buda where King Sigismund was trying to settle the disputes between the sprawling nation of the Teutonic Knights, and the affected Poland and Lithuania, after the decisive Battle of Grunwald (1410).In that same year, he became provost in the cathedral of Frauenburg
Edited sentence: In that same year, he became provost in the cathedral of Frauenburg, and he also participated in a mission to Buda where King Sigismund was trying to settle the disputes between the sprawling nation of the Teutonic Knights, and the affected Poland and Lithuania, after the decisive Battle of Grunwald (1410)