Page:A general history for colleges and high schools (Myers, 1890).djvu/459

Rh Bagdad upon the Tigris, Cairo upon the Nile, and Cordova upon the Guadalquivir—were issued the commands of three rival Caliphs, each of whom was regarded by his adherents as the sole rightful spiritual and civil successor of the Apostle. All, however, held the great Arabian Prophet in the same reverence, all maintained with equal zeal the sacred character of the Koran, and all prayed with their faces turned toward the holy city of Mecca.

Spread of the Religion and Language of the Arabs.—Just as the Romans Romanized the peoples they conquered, so did the Saracens Saracenize the populations of the countries subjected to their authority. Over a large part of Spain, over North Africa, Egypt, Syria, Babylonia, Persia, Northern India, and portions of Central Asia, were spread—to the more or less perfect exclusion of native customs, speech, and worship—the manners, the language, and the religion of the Arabian conquerors.

In Arabia no religion was tolerated save the faith of the Koran. But in all the countries beyond the limits of the peninsula, freedom of worship was allowed (save to idolaters, who were to be "rooted out"); unbelievers, however, must purchase this liberty by the payment of a moderate tribute. Yet notwithstanding this toleration, the Christian and Zoroastrian religions gradually died out almost everywhere throughout the domains of the Caliphs.

The Defects of Islam.—Civilization certainly owes a large debt to the Saracens. They preserved and transmitted much that was valuable in the science of the Greeks and the Persians (see p. 472). They improved trigonometry and algebra, and from India they