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
In the Treatment of Their Subject
Both Carthage and Rome ruled over communities of lineage kindred with their own, and over numerous others of alien race. But Rome had received into her citizenship one district after another, and had rendered it even legally accessible to the Latin communities; Carthage from the first maintained her exclusiveness, and did not permit the dependent districts even to cherish a hope of being some day placed upon an equal footing.
Rome granted to the communities of kindred lineage a share in the fruits of victory, especially in the acquired domains; and sought, by conferring material advantages on the rich and noble, to gain over at least a party to her own interest in the other subject states. Carthage not only retained for herself the produce of her victories, but even deprived the most privileged cities of their freedom of trade. Rome, as a rule, did not wholly take away independence even from the subject communities, and imposed a fixed tribute on none; Carthage despatched her overseers everywhere, and loaded even the old-Phoenician cities with a heavy tribute, while her subject tribes were practically treated as state-slaves.
In this way there was not in the compass of the Carthagino-African state a single community, with the exception of Utica, that would not have been politically and materially benefited by the fall of Carthage; in the Romano-Italic there was not one that had not much more to lose than to gain in rebelling against a government, which was careful to avoid injuring material interests, and which never at least by extreme measures challenged political opposition to conflict.
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Reference address : https://www.ellopos.net/elpenor/rome/3-01-carthage.asp?pg=39