Future Holy Roman Emperor Charles IV lost his father in the Hundred Years War on the loosing French side at the battle of Crécy. The heir of the house of Luxemburg made Prague in his rich home kingdom of Bohemia his splendid capital after gaining the imperial election and surviving rival elector Louis the Bavarian's bid in a civil war. Even worse was the arrival in his reign of the Black Death, which killed one to two third of many city and regional populations in and around the empire, with grim side effects such as pogroms, which mainly wiped out debts to Jewish moneylenders. Charles established a negotiated method for the imperial election, enshrined in a Golden Bulla.