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
Italian Subjects - Passive Burgesses
The change in the spirit of the government was most distinctly apparent in the treatment of the Italian and extra-Italian subjects of the Roman community. Formerly there had been distinguished in Italy the ordinary, and the Latin, allied communities, the Roman burgesses -sine suffragio- and the Roman burgesses with the full franchise.
Of these four classes the third was in the course of this period almost completely set aside, inasmuch as the course which had been earlier taken with the communities of passive burgesses in Latium and Sabina, was now applied also to those of the former Volscian territory, and these gradually--the last perhaps being in the year 566 Arpinum, Fundi, and Formiae--obtained full burgess-rights. In Campania Capua along with a number of minor communities in the neighbourhood was broken up in consequence of its revolt from Rome in the Hannibalic war.
Although some few communities, such as Velitrae in the Volscian territory, Teanum and Cumae in Campania, may have remained on their earlier legal footing, yet, looking at the matter in the main, this franchise of a passive character may be held as now superseded.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/3-11-government-governed.asp?pg=29