Fortunately for the Romans, at that very time the Greeks of Sicily urgently craved the aid of the king of Epirus. They had been defeated by the Carthaginians and their independence was menaced. Pyrrhus accordingly departed from Italy for more than two years, to gain some initial successes in Sicily and end in failure. When he returned to Italy it was too late. The Romans had established their dominion over the Italian rebels and were once more harassing Tarentum. Pyrrhus suffered a disastrous defeat at Beneventum in Samnium (275 B.C.), and Tarentum submitted soon after (272 B.C.). Pyrrhus himself was slain in Greece about the same time. The subjugation of Italy was now complete. After Rhegium, the southernmost city in Italy, had been wrested from the hands of mutinous mercenaries (270 B.C.), Rome likewise took upon herself the economic administration of Italy by introducing a silver coinage (269 B.C.). The war with Pyrrhus had clearly shown that Rome could not stop and rest content with the successes she had already gained, but would presently be forced into a struggle for all the countries about the Mediterranean, that is to say, for the dominion of the world as then known. She contrived, it is true, very quickly to resume friendly relations with the Greek cities of Italy, whose sympathies had in some cases been on the other side in the war with Tarentum. The autonomous administration she allowed them to enjoy on condition of furnishing her with ships, and the protection which they, for their part, received from the leading power in Italy, could not but dispose them favourably to a continuance of her suzerainty. With Carthage the case was different. Down to the time of the war with Pyrrhus the interests of Rome and Carthage had gone hand in hand to a great extent, or at worst had led to compromises in the three treaties of alliance (348, 343, and 306 B.C.). But in the wars against Pyrrhus it was in the interests of Carthage that Pyrrhus should be kept busy in Italy, while the Romans had contrived to turn his energies against the Carthaginians. And when the Romans were preparing to occupy Tarentum, a Carthaginian fleet hove in sight and manifested a desire to seize upon that city, the most important port of southern Italy. A power which had one foot in Rhegium, as Rome had, was bound presently to set the other down in Messana, and that would be a _casus belli_ under any circumstances. How could the Carthaginians endure to see the island for the possession of which they had striven for two hundred years pass into the hands of the Romans?