Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
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.
11. Cf. II. V. Colonization of the Volsci
12. Cf. II. V. Colonization of the Volsci
13. Cf. II. VI. New Fortresses in Apulia and Campania
14. Cf. II. VI. Last Struggles of Samnium
15. Cf. II. VII. Construction of New Fortresses and Roads
16. Cf. II. VII. The Boii
17. Cf. II. VII. Construction of New Fortresses and Roads
18. These were Pyrgi, Ostia, Antium, Tarracina, Minturnae, Sinuessa Sena Gallica, and Castrum Novum.
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