III. While the Republic protected its northern frontiers against the Gauls and Ligures, and combated the influence of Carthage in Sardinia and Corsica, she undertook, against a small barbarous people, another expedition, less difficult, it is true, but which was destined to have immense consequences. The war of Illyria, in fact, was on the point of opening to the Romans the roads to Greece and Asia, subjected to the successors of Alexander, and where Greek civilisation was dominant. Now become a great maritime power, Rome had henceforward among her attributes the police of the seas. The inhabitants of the eastern coasts of the Adriatic, addicted to piracy, were destructive to commerce. Several times they had carried their depredations as far as Messenia, and defeated Greek squadrons sent to repress their ravages.[499] These pirates belonged to the Illyrian nation. The Greeks considered them as barbarians, which meant foreigners to the Hellenic race; it is probable, nevertheless, that they had a certain affinity with it. Inconvenient allies of the kings of Macedonia, they often took arms either for or against them; intrepid and fierce hordes, they were ready to sell their services and blood to any one who would pay them, resembling, in this respect, the Albanians of the present day, believed by some to be their descendants driven into the mountains by the invasions of the Slaves.[500]
The king of the Illyrians was a child, and his mother, Teuta, exercised the regency. This fact alone reveals manners absolutely foreign to Hellenic and Roman civilisation. A chieftain of Pharos (Lesina), named Demetrius, in the pay of Teuta, occupied as a fief the island of Corcyra Nigra (now Curzola), and exercised the functions of prime minister. The Romans had no difficulty in gaining him; moreover, the Illyrians furnished a legitimate cause of war by assassinating an ambassador of the Republic.[501] The Senate immediately dispatched an army and a fleet to reduce them (525). Demetrius surrendered his island, which served as a basis against Apollonia, Dyrrhachium, Nutria, and a great part of the coast. After a resistance of some months, the Illyrians submitted, entered into an engagement to renounce piracy, surrendered several ports, and agreed to choose Demetrius, the ally of the Romans, for the guardian of their king.[502]
By this expedition, the Republic gained great popularity throughout Greece; the Athenians and the Achaian league especially were lavish of thanks, and began from that time to consider the Romans as their protectors against their dangerous neighbours, the kings of Macedonia. As to the Illyrians, the lesson they had received was not sufficient to correct them of their piratical habits. Ten years later another expedition was sent to chastise the Istrians at the head of the Adriatic,[503] and soon afterwards the disobedience of Demetrius to the orders of the Senate brought war again upon Illyria. He was compelled to take refuge with Philip of Macedon, while the young king became the ally or subject of the Republic.[504] In the mean time a new war attracted the attention of the Romans.
Invasion of the Cisalpines (528).
IV. The idea of the Senate was evidently to push its domination towards the north of Italy, and thus to preserve it from the invasion of the Gauls. In 522, at the proposal of the tribune Flaminius, the Senones had been expelled from Picenum, and their lands, declared public domain, were distributed among the plebeians. This measure, a presage to the neighbouring Gaulish tribes of the lot reserved for them, excited among them great uneasiness, and they began to prepare for a formidable invasion. In 528, they called from the other side of the Alps a mass of barbarians of the warlike race of the Gesatæ.[505] The terror at Rome was great. The same interests animated the peoples of Italy, and the fear of a danger equally threatening for all began to inspire them with the same spirit.[506] They rushed to arms; an army of 150,000 infantry and 6,000 cavalry was sent into the field, and the census of men capable of bearing arms amounted to nearly 800,000. The enumeration of the contingents of each country[507] furnishes valuable information on the general population of Italy, which appears, at this period, to have been, without reckoning the slaves, about the same as at the present day, yet with this difference, that the men capable of bearing arms were then in a much greater proportion.[508] These documents also give rise to the remark that the Samnites, only forty years recovered from the disasters of their sanguinary struggles, could still furnish 77,000 men.
The Gauls penetrated to the centre of Tuscany, and at Fesulæ defeated a Roman army; but, intimidated by the unexpected arrival of the consul L. Æmilius coming from Rimini, they retired, when, meeting the other consul, Caius Atilius, who, returning from Sardinia, had landed at Pisa, they were enclosed between two armies, and were annihilated. In the following year, the Gaulish tribes, successively driven back to the other side of the Po, were defeated again on the banks of the Adda; the coalition of the Cisalpine peoples was dissolved, without leading to the complete submission of the country. The colonies of Cremona and Placentia contributed, nevertheless, to hold it in check.
While the north of Italy seemed sufficient to absorb the attention of the Romans, great events were passing in Spain.
Second Punic War (536-552).
V. Carthage, humiliated, had lost the empire of the sea, with Sicily and Sardinia. Rome, on the contrary, had strengthened herself by her conquests in the Mediterranean, in Illyria, and in the Cisalpine. Suddenly the scene changes: the dangers which threatened the African town disappear, Carthage rises from her abasement, and Rome, which had lately been able to count 800,000 men in condition to carry arms, will soon tremble for her own existence. A change so unforeseen is brought about by the mere appearance in the ranks of the Carthaginian army of a man of genius, Hannibal.
His father, Hamilcar, chief of the powerful faction of the Barcas, had saved Carthage by suppressing the insurrection of the mercenaries. Charged afterwards with the war in Spain, he had vanquished the most warlike peoples of that country, and formed in silence a formidable array. Having discovered early the merit of a young man named Hasdrubal, he took him into his favour with the intention of making him his successor. In taking him for his son-in-law, he entrusted to him the education of Hannibal, on whom rested his dearest hopes. Hamilcar having been slain in 526, Hasdrubal had taken his place at the head of the army.