The Mohammedans, or Saracens (a word which means "Easterns"), were checked in Asia Minor by the forces of the Greek Emperor; and it was not till the fifteenth century that they at last obtained the long-coveted possession of Constantinople, by the valour of the Ottoman Turks. So, too, at the opposite extremity of the Mediterranean, it was an officer of the Greek Emperor who for a while held the Arab advance in check. The conquerors swept over the provinces of North Africa, and, after a long struggle, reduced the turbulent Berber tribes for a while to submission, till only the fortress of Ceuta held out against them. Like the rest of the southern shore of the Mediterranean, Ceuta belonged to the Greek Emperor; but it was so far removed from Constantinople that it was thrown upon the neighbouring kingdom of Spain for support, and, while still nominally under the authority of the Emperor, looked really to the King of Toledo for assistance and protection. It is not likely that all the aid that Spain could have given would have availed against the surging tide of Saracen invasion; but, as it happened, there was a quarrel at that time between Julian the governor of Ceuta and Roderick the King of Spain, which opened the door to the Arabs. Spain was then under the rule of the Visigoths, or West Goths, a tribe of barbarians, like the many others who overran the provinces of the Roman Empire in its decline. The Ostrogoths had occupied Italy; and their kinsmen the Visigoths, displacing or subduing the Suevi (or Swabians) and other rude German tribes, established themselves in the Roman province of Iberia (Spain) in the fifth century after Christ. They found the country in the same condition of effeminate luxury and degeneracy that had proved the ruin of other parts of the empire. Like many warlike peoples, the Romans, when their work was accomplished and the world was at their feet, had rested contentedly from their labours, and abandoned themselves to the pleasures that wealth and security permit. They were no longer the brave stern men who lived simple lives and left the ploughshare to wield the sword when a Scipio or a Cæsar summoned them to defend their country or to conquer a continent. In Spain the richer classes were given over to luxury and sensuality; they lived only for eating and drinking, gambling and all kinds of excitement. The mass of the people were either slaves, or, what was much the same thing, labourers bound to the soil, who could not be detached from the land they cultivated but passed with it from master to master. Between the rich and the slaves was a middle class of burghers, who were perhaps even worse off: for on their shoulders lay all the burden of supporting the State; they paid the taxes, performed the civil and municipal functions, and supplied the money which the rich squandered upon their luxuries. In a society so demoralized there were no elements of opposition to a resolute invader. The wealthy nobles were too deeply