Mahommed ibn Abd-el-Wahab was born about the year A.D. 1700 in the heart of the Arabian desert, the region known as the Nejd. The Nejd was the one clean spot in the decadent Moslem world. We have already seen how, with the transformation of the caliphate from a theocratic democracy to an Oriental despotism, the free-spirited Arabs had returned scornfully to their deserts. Here they had maintained their wild freedom. Neither caliph nor sultan dared venture far into those vast solitudes of burning sand and choking thirst, where the rash invader was lured to sudden death in a whirl of stabbing spears. The Arabs recognized no master, wandering at will with their flocks and camels, or settled here and there in green oases hidden in the desert's heart. And in the desert they retained their primitive political and religious virtues. The nomad Bedouin lived under the sway of patriarchal "sheiks"; the settled dwellers in the oases usually acknowledged the authority of some leading family. But these rulers possessed the slenderest authority, narrowly circumscribed by well-established custom and a jealous public opinion which they transgressed at their peril. The Turks, to be sure, had managed to acquire a precarious authority over the holy cities and the Red Sea littoral, but the Nejd, the vast interior, was free. And, in religion, as in politics, the desert Arabs kept the faith of their fathers. Scornfully rejecting the corruptions of decadent Islam, they held fast to the simple theology of primitive Islam, so congenial to their Arab natures.