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
The storms of the Adriatic, the inhospitable character at least of the Illyrian coasts, and the barbarism of the natives are manifestly not in themselves sufficient to explain this fact. But it was a circumstance fraught with the most momentous consequences for Italy, that the elements of civilization which came from the east did not exert their influence on its eastern provinces directly, but reached them only through the medium of those that lay to the west.
The Adriatic commerce carried on by Corinth and Corcyra was shared by the most easterly mercantile city of Magna Graecia, the Doric Tarentum, which by the possession of Hydrus (Otranto) had the command, on the Italian side, of the entrance of the Adriatic. Since, with the exception of the ports at the mouth of the Po, there were in those times no emporia worthy of mention along the whole east coast--the rise of Ancona belongs to a far later period, and later still the rise of Brundisium--it may well be conceived that the mariners of Epidamnus and Apollonia frequently discharged their cargoes at Tarentum.
The Tarentines had also much intercourse with Apulia by land; all the Greek civilization to be met with in the south-east of Italy owed its existence to them. That civilization, however, was during the present period only in its infancy; it was not until a later epoch that the Hellenism of Apulia was developed.
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Reference address : https://www.ellopos.net/elpenor/rome/1-10-greeks-italy-tuscans-carthaginians.asp?pg=20