カノッサの屈辱
The history of the papacy from 1048 to 1257 would continue to be marked by conflict between popes and the Holy Roman Emperor, most prominently the Investiture Controversy, a dispute over who—pope or emperor—could appoint bishops within the Empire. Henry IV's Walk to Canossa in 1077 to meet Pope Gregory VII (1073–85), although not dispositive within the context of the larger dispute, has become legendary. Although the emperor renounced any right to lay investiture in the Concordat of Worms (1122), the issue would flare up again.