Moawiyah, a usurper, was now recognized as Caliph (661). He succeeded in making the office hereditary, instead of elective, as it hitherto had been, and thus established what is known as the dynasty of the Ommiades [Footnote: So called from Ommaya, an ancestor of Moawiyah.], the rulers of which family for nearly a century issued their commands from the city of Damascus.
The house of the Ommiades was overthrown by the adherents of the house of Ali, who established a new dynasty (750), known as that of the Abbassides, so called from Abbas, an uncle of Mohammed. The new family, soon after coming to power, established the seat of the royal residence on the lower Tigris, and upon the banks of that river founded the renowned city of Bagdad, which was destined to remain the abode of the Abbasside Caliphs for a period of five hundred years,—until the subversion of the house by the Tartars of the North.
The golden age of the caliphate of Bagdad covers the latter part of the eighth and the ninth century of our era, and was illustrated by the reign of the renowned Haroun-al-Raschid (786-809), the hero of the Arabian Nights. During this period science, philosophy, and literature were most assiduously cultivated by the Arabian scholars, and the court of the Caliphs presented in culture and luxury a striking contrast to the rude and barbarous courts of the kings and princes of Western Christendom.
THE DISMEMBERMENT OF THE CALIPHATE.—"At the close of the first century of the Hegira," writes Gibbon, "the Caliphs were the most potent and absolute monarchs of the globe. The word that went forth from the palace at Damascus was obeyed on the Indus, on the Jaxartes, and on the Tagus." Scarcely less potent was the word that at first went forth from Bagdad. But in a short time the extended empire of the Abbassides, through the quarrels of sectaries and the ambitions of rival aspirants for the honors of the caliphate, was broken in fragments, and from three capitals—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. [Footnote: Beyond the eastern edge of Mesopotamia, the Arabs failed to impress their language upon the subjected peoples, or in any way, save in the matter of creed, to leave upon them any important permanent trace of their conquests.]
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. [Footnote: The number of Guebers, or fire- worshippers, in Persia at the present time is estimated at from 50,000 to 100,000. About the same number may be counted in India, the descendants of the Guebers who fled from Persia at the time of the Arabian invasion. They are there called Parsees, from the land whence they came.]
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 borrowed the decimal system of notation and introduced it into the West.
Many of the doctrines of Islam, however, are most unfavorable to human liberty, progress, and improvement. It teaches fatalism, and thus discourages effort and enterprise. It allows polygamy and pelts no restraint upon divorce, and thus destroys the sanctity of the family life. It permits slavery and fosters despotism. It inspires a blind and bigoted hatred of race and creed, and thus puts far out of sight the salutary truth of the brotherhood of man. Because of these and other scarcely less prominent defects in its teachings, Islam has proved a blight and curse to almost every race embracing its sterile doctrines.
Mohammedism is vastly superior, however, either to fetichism or idolatry, and consequently, upon peoples very low in the scale of civilization, it has an elevating influence. Thus, upon the negro tribes of Central Africa, where it is to-day spreading rapidly, it is acknowledged to have a civilizing effect.