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
Relation of Rome to Latium
The form of the Roman hegemony over Latium was, in general, that of an alliance on equal terms between the Roman community on the one hand and the Latin confederacy on the other, establishing a perpetual peace throughout the whole domain and a perpetual league for offence and defence. "There shall be peace between the Romans and all communities of the Latins, as long as heaven and earth endure; they shall not wage war with each other, nor call enemies into the land, nor grant passage to enemies: help shall be rendered by all in concert to any community assailed, and whatever is won in joint warfare shall be equally distributed."
The stipulated equality of rights in trade and exchange, in commercial credit and in inheritance, tended, by the manifold relations of business intercourse to which it led, still further to interweave the interests of communities already connected by the ties of similar language and manners, and in this way produced an effect somewhat similar to that of the abolition of customs-restrictions in our own day. Each community certainly retained in form its own law: down to the time of the Social war Latin law was not necessarily identical with Roman: we find, for example, that the enforcing of betrothal by action at law, which was abolished at an early period in Rome, continued to subsist in the Latin communities.
But the simple and purely national development of Latin law, and the endeavour to maintain as far as possible uniformity of rights, led at length to the result, that the law of private relations was in matter and form substantially the same throughout all Latium. This uniformity of rights comes most distinctly into view in the rules laid down regarding the loss and recovery of freedom on the part of the individual burgess. According to an ancient and venerable maxim of law among the Latin stock no burgess could become a slave in the state wherein he had been free, or suffer the loss of his burgess-rights while he remained within it: if he was to be punished with the loss of freedom and of burgess-rights (which was the same thing), it was necessary that he should be expelled from the state and should enter on the condition of slavery among strangers.
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Reference address : https://www.ellopos.net/elpenor/rome/1-07-hegemony-rome-latium.asp?pg=9