In 1374 King Louis of Hungary approved the Privilege of Koszyce (Polish: "przywilej koszycki" or "ugoda koszycka") in Košice in order to guarantee the Polish throne for his daughter Jadwiga. He broadened the definition of who was a member of the nobility and exempted the entire class from all but one tax (łanowy, which was limited to 2 grosze from łan (an old measure of land size)). In addition, the King's right to raise taxes was abolished; no new taxes could be raised without the agreement of the nobility. Henceforth, also, district offices (Polish: "urzędy ziemskie") were reserved exclusively for local nobility, as the Privilege of Koszyce forbade the king to grant official posts and major Polish castles to foreign knights. Finally, this privilege obliged the King to pay indemnities to nobles injured or taken captive during a war outside Polish borders.
What did king louis of hungary do for the nobles?
exempted the entire class from all but one tax