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 Advance of the Romans Checked by the Policy of the Restoration
The Gracchan party, which suggested these extensions of territory beyond the Alps, evidently wished to open up there a new and immeasurable field for their plans of colonization,--a field which offered the same advantages as Sicily and Africa, and could be more easily wrested from the natives than he Sicilian and Libyan estates from the Italian capitalists.
The fall of Gaius Gracchus, no doubt, made itself felt here also in the restriction of acquisitions of territory and still more of the founding of towns; but, if the design was not carried out in its full extent, it was at any rate not wholly frustrated. The territory acquired and, still more, the foundation of Narbo--a settlement for which the senate vainly endeavoured to prepare the fate of that at Carthage--remained standing as parts of an unfinished structure, exhorting the future successor of Gracchus to continue the building.
It is evident that the Roman mercantile class, which was able to compete with Massilia in the Gallo-Britannic traffic at Narbo alone, protected that settlement from the assaults of the Optimates.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/4-05-peoples-north.asp?pg=10