The religion of Mohammed , or Islam , (q. v .), is essentially much the same as the religion of the Jews with some elements borrowed from the Christian religion, and is defined by Carlyle as a bastard Christianity; originating in Arabia it spread rapidly over the W. of Asia, the N. of Africa, and threatened at one time to overrun Europe itself; it is the religion to-day of two hundred millions of the human race, and the profession of it extends over a wide area in western and southern Asia as also in northern Africa, though its limits in Europe do not extend beyond the bounds of Turkey.