Nice quiz with good variety, although I suggest eliminating German words that are not also English words (such as immer and Quelle). Up to you. The one word that is also an English word is spelled Leitmotif in English. Aachen was not the capital of HRE - the HRE had no capital. Its emperors ruled by traveling from one residence (Pfalz) to another residence or imperial city throughout the empire. Emperors were crowned in Aachen for a long time, though.