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 main cause however of the internal breaking up of the league was the very subjugation of the common foe; forbearance ceased on one side, devotedness ceased on the other, from the time when they thought that they had no longer need of each other. The open breach between the Latins and Hernici on the one hand and the Romans on the other was more immediately occasioned partly by the capture of Rome by the Celts and the momentary weakness which it produced, partly by the definitive occupation and distribution of the Pomptine territory. The former allies soon stood opposed in the field.
Already Latin volunteers in great numbers had taken part in the last despairing struggle of the Antiates: now the most famous of the Latin cities, Lanuvium (371), Praeneste (372-374, 400), Tusculum (373), Tibur (394, 400), and even several of the fortresses established in the Volscian land by the Romano-Latin league, such as Velitrae and Circeii, had to be subdued by force of arms, and the Tiburtines were not afraid even to make common cause against Rome with the once more advancing hordes of the Gauls. No concerted revolt however took place, and Rome mastered the individual towns without much trouble.
Tusculum was even compelled (in 373) to give up its political independence, and to enter into the burgess-union of Rome as a subject community (-civitas sine suffragio-) so that the town retained its walls and an--although limited--self-administration, including magistrates and a burgess-assembly of its own, whereas its burgesses as Romans lacked the right of electing or being elected --the first instance of a whole burgess-body being incorporated as a dependent community with the Roman commonwealth.
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Reference address : https://www.ellopos.net/elpenor/rome/2-05-subjugation-latins-campanians.asp?pg=14