(It was the fate of the religion which Mahomet founded, as it has been of other great systems, to undergo many sectarian divisions, and to be used as the instrument of conquest and political power. When Islam had somewhat departed from the character which it first manifested in moral sternness and fiery zeal, and had established itself in various parts of the world on a basis of commerce or of science, rather than that of its original inspiration, various off shoots of the faith began to assume prominence. Among the sects which sprang up was one that claimed to represent the true succession of Mahomet. This sect was itself the result of a schism among the adherents of one of the two principal divisions of the Moslems--the Shiahs. They maintained that Ali, a relation and the adopted son of Mahomet and husband of his daughter Fatima, was the first legitimate imam or successor of the prophet. They regarded the other and greater division--the Sunnites, who recognized the first three caliphs, Abu-Bekr, Omar, and Othman--as usurpers. Ali was the fourth caliph, and the Sunnites in turn looked upon his followers, the Shiahs, as heretics. The schism among the Shiahs grew out of the claim of the schismatics that the legitimate imam or successor of the Prophet must be in the line of descent from Ali. The sixth imam, Jaffer, upon the death of his eldest son, Ismail, appointed another son, Moussa or Moses, his heir; but a large body of the Shiahs denied the right of Jaffer to make a new nomination, declaring the imamate to be strictly hereditary. They formed a new party of Ismailians, and in 908 a chief of this sect, Mahomet, surnamed el-Mahdi, or the Leader--a title of the Shiahs for their imams--revolted in Africa. He called himself a descendant of Ismail and claimed to be the legitimate imam. He aimed at the temporal power of a caliph, and soon established a rival caliphate in Africa, where he had obtained a considerable sovereignty. The dynasty thus begun assumed the name of Fatimites in honor of Fatima. The fourth caliph of this line, El-Moizz, conquered Egypt about 969, founded the modern Cairo, and made it his capital. The claims of the Egyptian caliphate were heralded throughout all Islam, and its rule was rapidly extended into Syria and Arabia. It played an important part in the history of the Crusades, but in 1171 was abolished by the famous Saladin, and Egypt was restored to the obedience which it had formerly owned to Bagdad. The Bagdad caliphs, called Abbassides--claiming descent from Abbas, the uncle of Mahomet--remained rulers of Egypt until 1517, or until within twenty years of the death of the last Abbasside.)