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 position of the non-Latin allies had, as we have mentioned before,(27) undergone a change greatly to their disadvantage in consequence of the Hannibalic war.
27. Cf. III. VI In Italy
Only a few communities in this category, such as Neapolis, Nola, Rhegium, and Heraclea, had during all the vicissitudes of that war remained steadfastly on the Roman side, and therefore retained their former rights as allies unaltered; by far the greater portion were obliged in consequence of having changed sides to acquiesce in a revision of the existing treaties to their disadvantage.
The reduced position of the non-Latin allies is attested by the emigration from their communities into the Latin: when in 577 the Samnites and Paelignians applied to the senate for a reduction of their contingents, their request was based on the ground that during late years 4000 Samnite and Paelignian families had migrated to the Latin colony of Fregellae.
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Reference address : https://www.ellopos.net/elpenor/rome/3-11-government-governed.asp?pg=31