Blood libel accusations were accusations, not facts. Jews did not take the blood of Christian children for ritual ceremonies, and Muhammad did not ascend to Heaven on a white winged horse from Jerusalem. —- Think before you post
But at the same time period you mentioned, the Crusades in 1095 were organized by western European Christians after centuries of Muslim wars of expansion. Their primary objectives were to stop the expansion of Muslim states, to reclaim for Christianity the Holy Land in the Middle East, and to recapture territories that had formerly been Christian.
