He saved his empire by involving the kingdoms of the West in rebellion and blood. From these seeds of discord uprose a generation of iron men, who assaulted and endangered the empire of his son, Andronicus the Elder (1282-1332). Thousands of Genoese and Catalans, released from the wars that Michael had aroused in the West, took service under his successor against the Turks. Other mercenaries flocked to their standard, and, under the name of the Great Company, they subverted the authority of the emperor, defeated his troops, laid waste his territory, united themselves with his enemies, and, finally, abandoning the banks of the Hellespont, marched into Greece. Here they overthrew the remnant of the Latin power, and for fourteen years (1311-1326) the Great Company was the terror of the Grecian states. Their factions drove them to acknowledge the sovereignity of the house of Arragon; and, during the remainder of the fourteenth century, Athens as a government or an appanage was successfully bestowed by the kings of Sicily. Conquered in turn by the French and Catalans, Athens at length became the capital of a state that extended over Thebes, Argos, Corinth, Delphi, and a part of Thessaly, and was ruled by the family of Accaioli, plebeians of Florence (1384-1456). The last duke of this dynasty was strangled by Mahomet II., who educated his sons in the discipline of the seraglio. During the reign of John Palæologus, son of Andronicus the Younger, which began in 1355, the eastern empire was nearly subverted by the Genoese. On the return of the legitimate sovereign to Constantinople, the Genoese, who had established their factories and industries in the suburb of Galata, or Pera, were allowed to remain. During the civil wars the Genoese forces took advantage of the disunion of the Greeks, and by the skilful use of their power exacted a treaty by which they were granted a monopoly of trade, and almost a right of dominions. The Roman Empire (I smile in transcribing the name) might soon have sunk into a province of Genoa if the ambition of the republic had not been checked by the ruin of her freedom and naval power. Yet the spirit of commerce survived that of conquest; and the colony of Pera still awed the capital and navigated the Euxine till it was involved by the Turks in the final servitude of Constantinople itself. _III.--End of the Roman World_