 Salzburg (vicinity) was the source of salt, and Augsburg was, at the time, a much more important city than Munich.In 1327 most of the city was destroyed by a fire but was rebuilt, extended and protected with a new fortification some years later.Philosophers like Michael of Cesena, Marsilius of Padua and William of Ockham supported Louis IV in his fight with the papacy and were protected at the emperor's court.