(M659) The first eminent historical personage was Mago, B.C. 500, who greatly extended the dominions of Carthage. Of his two sons, Hamilcar was defeated and slain by Gelon of Syracuse. The other son, Hasdrubal, perished in Sardinia. His sons remained the most powerful citizens of the State, carrying on war against the Moors and other African tribes. Hannibal, grandson of Hamilcar, distinguished himself in an invasion of Sicily, B.C. 410, and with a large army, of one hundred thousand men, stormed and took Selinus, and killed one hundred and sixty thousand of the inhabitants, and carried away captive five thousand more. He then laid siege to Himera, which he also took, and slaughtered three thousand of the inhabitants, in expiation of the memory of his grandfather. These were Grecian cities, and the alarm throughout Greece was profound for this new enemy. These events look place about the time that Hermocrates was banished for an unsuccessful maritime war. Hermocrates afterward attempted to enter Syracuse, but was defeated and slain. (M660) At this period Dionysius appears upon the stage—for the next generation the most formidable name in the Grecian world. He had none of the advantages of family or wealth—but was well educated, and espoused the cause of Hermocrates, and rose to distinction during the intestine commotions which resulted from the death of Hermocrates and the banishment of Diocles, the lawgiver. (M661) In 406 B.C., Sicily was again invaded by a large force from Carthage, estimated by some writers as high as three hundred thousand men, who were chiefly mercenaries. Hannibal was the leader of these forces. All the Greek cities now prepared for vigorous war. The Syracusans sent to Sparta and the Italian Greek cities for aid. Agrigentum was most in danger, and most alarmed of the Greek Sicilian cities. It was second only to Syracuse in numbers and wealth, having a population of eight hundred thousand people, though this is probably an exaggeration. It was rich in temples and villas and palaces; its citizens were wealthy, luxurious, and hospitable. (M662) The army of Hannibal advanced against this city, which was strongly fortified, and re-enforced by a strong body of troops from Syracuse, under Daphneus. He defeated the Iberian mercenaries, but did not preserve his victory, so that the Carthaginians were enabled to take and plunder Agrigentum. There was, of course, bitter complaint against the Syracusan generals, who might have prevented this calamity. In the discontent which succeeded, Dionysius was elevated to the command. He procured a vote to restore the Hermocratean exiles, and procured, also, a body of paid guards, and established himself as despot of Syracuse; and he arrived at this power by demagogic arts, allying himself with the ultra democratic party.