Maritime Relations
Before we describe the political organization under which the Italy which was thus united was governed on the part of Rome, it remains that we should glance at the maritime relations that subsisted in the fourth and fifth centuries. At this period Syracuse and Carthage were the main competitors for the dominion of the western waters. On the whole, notwithstanding the great temporary successes which Dionysius (348–389), Agathocles (437–465), and Pyrrhus (476–478) obtained at sea, Carthage had the preponderance and Syracuse sank more and more into a naval power of the second rank. The maritime importance of Etruria was wholly gone;(6) the hitherto Etruscan island of Corsica, if it did not quite pass into the possession, fell under the maritime supremacy, of the Carthaginians. Tarentum, which for a time had played a considerable part, had its power broken by the Roman occupation. The brave Massiliots maintained their ground in their own waters; but they exercised no material influence over the course of events in those of Italy. The other maritime cities hardly came as yet into serious account.
Decline of the Roman Naval Power
Rome itself was not exempt from a similar fate; its own waters were likewise commanded by foreign fleets. It was indeed from the first a maritime city, and in the period of its vigour never was so untrue to its ancient traditions as wholly to neglect its war marine or so foolish as to desire to be a mere continental power. Latium furnished the finest timber for ship-building, far surpassing the famed growths of Lower Italy; and the very docks constantly maintained in Rome are enough to show that the Romans never abandoned the idea of possessing a fleet of their own. During the perilous crises, however, which the expulsion of the kings, the internal disturbances in the Romano-Latin confederacy, and the unhappy wars with the Etruscans and Celts brought upon Rome, the Romans could take but little interest in the state of matters in the Mediterranean; and, in consequence of the policy of Rome directing itself more and more decidedly to the subjugation of the Italian continent, the growth of its naval power was arrested. There is hardly any mention of Latin vessels of war up to the end of the fourth century, except that the votive offering from the Veientine spoil was sent to Delphi in a Roman vessel (360). The Antiates indeed continued to prosecute their commerce with armed vessels and thus, as occasion offered, to practise the trade of piracy also, and the "Tyrrhene corsair" Postumius, whom Timoleon captured about 415, may certainly have been an Antiate; but the Antiates were scarcely to be reckoned among the naval powers of that period, and, had they been so, the fact must from the attitude of Antium towards Rome have been anything but an advantage to the latter. The extent to which the Roman naval power had declined about the year 400 is shown by the plundering of the Latin coasts by a Greek, presumably a Sicilian, war fleet in 405, while at the same time Celtic hordes were traversing and devastating the Latin land.(7) In the following year (406), and beyond doubt under the immediate impression produced by these serious events, the Roman community and the Phoenicians of Carthage, acting respectively for themselves and for their dependent allies, concluded a treaty of commerce and navigation—the oldest Roman document of which the text has reached us, although only in a Greek translation.(8) In that treaty the Romans had to come under obligation not to navigate the Libyan coast to the west of the Fair Promontory (Cape Bon) excepting in cases of necessity. On the other hand they obtained the privilege of freely trading, like the natives, in Sicily, so far as it was Carthaginian; and in Africa and Sardinia they obtained at least the right to dispose of their merchandise at a price fixed with the concurrence of the Carthaginian officials and guaranteed by the Carthaginian community. The privilege of free trading seems to have been granted to the Carthaginians at least in Rome, perhaps in all Latium; only they bound themselves neither to do violence to the subject Latin communities,(9) nor, if they should set foot as enemies on Latin soil, to take up their quarters for a night on shore—in other words, not to extend their piratical inroads into the interior—nor to construct any fortresses in the Latin land.
We may probably assign to the same period the already mentioned(10) treaty between Rome and Tarentum, respecting the date of which we are only told that it was concluded a considerable time before 472. By it the Romans bound themselves—for what concessions on the part of Tarentum is not stated—not to navigate the waters to the east of the Lacinian promontory; a stipulation by which they were thus wholly excluded from the eastern basin of the Mediterranean.
Roman Fortification of the Coast
These were disasters no less than the defeat on the Allia, and the Roman senate seems to have felt them as such and to have made use of the favourable turn, which the Italian relations assumed soon after the conclusion of the humiliating treaties with Carthage and Tarentum, with all energy to improve its depressed maritime position. The most important of the coast towns were furnished with Roman colonies: Pyrgi the seaport of Caere, the colonization of which probably falls within this period; along the west coast, Antium in 415,(11) Tarracina in 425,(12) the island of Pontia in 441,(13) so that, as Ardea and Circeii had previously received colonists, all the Latin seaports of consequence in the territory of the Rutuli and Volsci had now become Latin or burgess colonies; further, in the territory of the Aurunci, Minturnae and Sinuessa in 459;(14) in that of the Lucanians, Paestum and Cosa in 481;(15) and, on the coast of the Adriatic, Sena Gallica and Castrum Novum about 471,(16) and Ariminum in 486;(17) to which falls to be added the occupation of Brundisium, which took place immediately after the close of the Pyrrhic war. In the greater part of these places—the burgess or maritime colonies(18)—the young men were exempted from serving in the legions and destined solely for the watching of the coasts. The well judged preference given at the same time to the Greeks of Lower Italy over their Sabellian neighbours, particularly to the considerable communities of Neapolis, Rhegium, Locri, Thurii, and Heraclea, and their similar exemption under the like conditions from furnishing contingents to the land army, completed the network drawn by Rome around the coasts of Italy.
But with a statesmanlike sagacity, from which the succeeding generations might have drawn a lesson, the leading men of the Roman commonwealth perceived that all these coast fortifications and coast garrisons could not but prove inadequate, unless the war marine of the state were again placed on a footing that should command respect. Some sort of nucleus for this purpose was already furnished on the subjugation of Antium (416) by the serviceable war-galleys which were carried off to the Roman docks; but the enactment at the same time, that the Antiates should abstain from all maritime traffic,(19) is a very clear and distinct indication how weak the Romans then felt themselves at sea, and how completely their maritime policy was still summed up in the occupation of places on the coast. Thereafter, when the Greek cities of southern Italy, Neapolis leading the way in 428, were admitted to the clientship of Rome, the war-vessels, which each of these cities bound itself to furnish as a war contribution under the alliance to the Romans, formed at least a renewed nucleus for a Roman fleet. In 443, moreover, two fleet-masters (-duoviri navales-) were nominated in consequence of a resolution of the burgesses specially passed to that effect, and this Roman naval force co-operated in the Samnite war at the siege of Nuceria.(20) Perhaps even the remarkable mission of a Roman fleet of twenty-five sail to found a colony in Corsica, which Theophrastus mentions in his "History of Plants" written about 446, belongs to this period. But how little was immediately accomplished with all this preparation, is shown by the renewed treaty with Carthage in 448. While the stipulations of the treaty of 406 relating to Italy and Sicily(21) remained unchanged, the Romans were now prohibited not only from the navigation of the eastern waters, but also from that of the Atlantic Ocean which was previously permitted, as well as debarred from holding commercial intercourse with the subjects of Carthage in Sardinia and Africa,