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
If, as was undoubtedly the case, the foreigners, ever in those times intent on piracy and plunder as well as trade, did not fail, when opportunity offered, to levy contributions on the natives and to carry them off as slaves, the natives on their part exercised the right of retaliation; and that the Latins and Tyrrhenes retaliated with greater energy and better fortune than their neighbours in the south of Italy, is attested not merely by the legends to that effect, but by the actual results.
In these regions the Italians succeeded in resisting the foreigners and in retaining, or at any rate soon resuming, the mastery not merely of their own mercantile cities and mercantile ports, but also of their own sea. The same Greek invasion which crushed and denationalized the races of the south of Italy, directed the energies of the peoples of Central Italy--very much indeed against the will of their instructors--towards navigation and the founding of towns.
It must have been in this quarter that the Italians first exchanged the raft and the boat for the oared galley of the Phoenicians and Greeks. Here too we first encounter great mercantile cities, particularly Caere in southern Etruria and Rome on the Tiber, which, if we may judge from their Italian names as well as from their being situated at some distance from the sea, were--like the exactly similar commercial towns at the mouth of the Po, Spina and Atria, and Ariminum further to the south--certainly not Greek, but Italian foundations.
It is not in our power, as may easily be supposed, to exhibit the historical course of this earliest reaction of Italian nationality against foreign aggression; but we can still recognize the fact, which was of the greatest importance as bearing upon the further development of Italy, that this reaction took a different course in Latium and in southern Etruria from that which it exhibited in the properly Tuscan and adjoining provinces.
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Reference address : https://www.ellopos.net/elpenor/rome/1-10-greeks-italy-tuscans-carthaginians.asp?pg=23