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
Bounds - Relations to Rome
Notwithstanding all these conflicts the bounds of the Roman territory were not materially advanced; Lugudunum Convenarum, where Pompeius had settled the remnant of the Sertorian army,(7) Tolosa, Vienna and Genava were still the most remote Roman townships towards the west and north.
7. Cf. V. I. Pompeius Puts and End to the Insurrection
But at the same time the importance of these Gallic possessions for the mother country was continually on the increase. The glorious climate, akin to that of Italy, the favourable nature of the soil, the large and rich region lying behind so advantageous for commerce with its mercantile routes reaching as far as Britain, the easy intercourse by land and sea with the mother country, rapidly gave to southern Gaul an economic importance for Italy, which much older possessions, such as those in Spain, had not acquired in the course of centuries; and as the Romans who had suffered political shipwreck at this period sought an asylum especially in Massilia, and there found once more Italian culture and Italian luxury, voluntary emigrants from Italy also were attracted more and more to the Rhone and the Garonne.
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Reference address : https://www.ellopos.net/elpenor/rome/5-07-subjugation-west.asp?pg=8