Final answer:
Pope Urban II called for the Crusades and offered remissions of sins for joining.
Step-by-step explanation:
Pope Urban II at the Council of Clermont in 1095 called for the Crusades. He offered remissions of sins for those who joined the Crusades to recapture the Holy Land. However, there is no historical evidence to suggest that he urged the sending of a diplomatic mission to the Muslims or the destruction of all Jewish settlements on the crusaders' way to the Holy Land.
Learn more about Pope Urban II and the Crusades