In this way undoubtedly the river cut off their retreat, and their way homeward lay through the hostile army. But the superiority of the Roman arms and of Roman discipline achieved the victory, and the army cut its way through: once more the Roman tactics had redeemed the blunders of the general. The victory was due to the soldiers and officers, not to the generals, who gained a triumph only through popular favour in opposition to the just decree of the senate. Gladly would the Insubres have made peace; but Rome required unconditional subjection, and things had not yet come to that pass. They tried to maintain their ground with the help of their northern kinsmen; and, with 30,000 mercenaries whom they had raised amongst these and their own levy, they received the two consular armies advancing once more in the following year (532) from the territory of the Cenomani to invade their land. Various obstinate combats took place; in a diversion, attempted by the Insubres against the Roman fortress of Clastidium (Casteggio, below Pavia), on the right bank of the Po, the Gallic king Virdumarus fell by the hand of the consul Marcus Marcellus. But, after a battle already half won by the Celts but ultimately decided in favour of the Romans, the consul Gnaeus Scipio took by assault Mediolanum, the capital of the Insubres, and the capture of that town and of Comum terminated their resistance. Thus the Celts of Italy were completely vanquished, and as, just before, the Romans had shown to the Hellenes in the war with the pirates the difference between a Roman and a Greek sovereignty of the seas, so they had now brilliantly demonstrated that Rome knew how to defend the gates of Italy against freebooters on land otherwise than Macedonia had guarded the gates of Greece, and that in spite of all internal quarrels Italy presented as united a front to the national foe, as Greece exhibited distraction and discord.
The boundary of the Alps was reached, in so far as the whole flat country on the Po was either rendered subject to the Romans, or, like the territories of the Cenomani and Veneti, was occupied by dependent allies. It needed time, however, to reap the consequences of this victory and to Romanize the land. In this the Romans did not adopt a uniform mode of procedure. In the mountainous northwest of Italy and in the more remote districts between the Alps and the Po they tolerated, on the whole, the former inhabitants; the numerous wars, as they are called, which were waged with the Ligurians in particular (first in 516) appear to have been slave-hunts rather than wars, and, often as the cantons and valleys submitted to the Romans, Roman sovereignty in that quarter was hardly more than a name. The expedition to Istria also (533) appears not to have aimed at much more than the destruction of the last lurking-places of the Adriatic pirates, and the establishment of a communication by land along the coast between the Italian conquests of Rome and her acquisitions on the other shore. On the other hand the Celts in the districts south of the Po were doomed irretrievably to destruction; for, owing to the looseness of the ties connecting the Celtic nation, none of the northern Celtic cantons took part with their Italian kinsmen except for money, and the Romans looked on the latter not only as their national foes, but as the usurpers of their natural heritage. The extensive assignations of land in 522 had already filled the whole territory between Ancona and Ariminum with Roman colonists, who settled here without communal organization in market-villages and hamlets. Further measures of the same character were taken, and it was not difficult to dislodge and extirpate a half-barbarous population like the Celtic, only partially following agriculture, and destitute of walled towns. The great northern highway, which had been, probably some eighty years earlier, carried by way of Otricoli to Narni, and had shortly before been prolonged to the newly-founded fortress of Spoletium (514), was now (534) carried, under the name of the "Flaminian" road, by way of the newly-established market-village Forum Flaminii (near Foligno), through the pass of Furlo to the coast, and thence along the latter from Fanum (Fano) to Ariminum; it was the first artificial road which crossed the Apennines and connected the two Italian seas. Great zeal was manifested in covering the newly-acquired fertile territory with Roman townships. Already, to cover the passage of the Po, the strong fortress of Placentia (Piacenza) had been founded on the right bank; not far from it Cremona had been laid out on the left bank, and the building of the walls of Mutina (Modena), in the territory taken away from the Boii, had far advanced - already preparations were being made for further assignations of land and for continuing the highway, when sudden event interrupted the Romans in reaping the fruit of their successes.
Chapter IV
Hamilcar and Hannibal
The treaty with Rome in 513 gave to the Carthaginians peace, but they paid for it dearly. That the tribute of the largest portion of Sicily now flowed into the enemy's exchequer instead of the Carthaginian treasury, was the least part of their loss. They felt a far keener regret when they not merely had to abandon the hope of monopolizing all the sea-routes between the eastern and the western Mediterranean - just as that hope seemed on the eve of fulfilment - but also saw their whole system of commercial policy broken up, the south-western basin of the Mediterranean, which they had hitherto exclusively commanded, converted since the loss of Sicily into an open thoroughfare for all nations, and the commerce of Italy rendered completely independent of the Phoenician. Nevertheless the quiet men of Sidon might perhaps have prevailed on themselves to acquiesce in this result. They had met with similar blows already; they had been obliged to share with the Massiliots, the Etruscans, and the Sicilian Greeks what they had previously possessed alone; even now the possessions which they retained, Africa, Spain, and the gates of the Atlantic Ocean, were sufficient to confer power and prosperity. But in truth, where was their security that these at least would continue in their hands? The demands made by Regulus, and his very near approach to the obtaining of what he asked, could only be forgotten by those who were willing to forget; and if Rome should now renew from Lilybaeum the enterprise which she had undertaken with so great success from Italy, Carthage would undoubtedly fall, unless the perversity of the enemy or some special piece of good fortune should intervene to save it No doubt they had peace for the present; but the ratification of that peace had hung on a thread, and they knew what public opinion in Rome thought of the terms on which it was concluded. It might be that Rome was not yet meditating the conquest of Africa and was as yet content with Italy; but if the existence of the Carthaginian state depended on that contentment, the prospect was but a sorry one; and where was the security that the Romans might not find it even convenient for their Italian policy to extirpate rather than reduce to subjection their African neighbour?