The unsettled state of these kingdoms inspired hordes of Gauls, athirst for plunder, with the idea of crossing the Alps and conquering both the Apennine and Balkan peninsulas. Italy owed her salvation to the vigorous defence made by the Romans at the Vadimonian Lake (283 B.C.); but Macedonia was occupied for several years and the swarms of Gauls spread as far as Delphi, and finally settled in Asia Minor under the name of Galatians.
Even before the Gallic invasion, Pyrrhus of Epirus, who had taken possession of Macedonia for a while, had withdrawn to his own home, and he and his army of mercenaries turned their eyes westward, eager for action. The wished-for opportunity of there regaining the influence and reputation he had lost in the west was not slow to present itself. Tarentum, the last independent city of any importance in Italy, had provoked Rome to hostilities and was endeavouring to enlist mercenaries for the war. Pyrrhus went to the help of the Tarentines, even as Alexander of Epirus, a cousin of Alexander the Great, had gone before him (334 B.C.). After some initial successes the latter had lost his life in battle against the Lucanians (331 B.C.). His nephew did not fare much better. The generalship of Roman mayors, elected afresh every year, was at first no match for that of Pyrrhus, who had great military successes to look back upon. Up to this time the Macedonian phalanx had invariably proved the instrument of victory, especially in the opening encounters of a campaign, and even the men of Rome gave ground before the elephants, the “heavy artillery” of the Epirots. But the second victory which the king gained over the Romans was a “Pyrrhic victory,” for his gains did not compensate his losses. On this occasion Rome owed the victory mainly to the inflexible courage of her statesmen. The blind Appius Claudius, who thirty years before had borne an honourable part in the successful struggle with the Samnites, caused himself to be led into the senate and by his arguments induced the Romans inflexibly to refuse all offers of peace on less than favourable terms. “Never have the Romans concluded peace with a victorious foe.” These proud words contain the secret of the ultimate success of Rome in all her wars of that century.
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