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 warfare which he waged, accordingly, had to support itself, and he had to carry out on a great scale what he had already attempted on a smaller scale at Monte Pellegrino. But further, Hamilcar was not only a military chief, he was also a party leader. In opposition to the implacable governing party, which eagerly but patiently waited for an opportunity of overthrowing him, he had to seek support among the citizens; and although their leaders might be ever so pure and noble, the multitude was deeply corrupt and accustomed by the unhappy system of corruption to give nothing without being paid for it.
In particular emergencies, indeed, necessity or enthusiasm might for the moment prevail, as everywhere happens even with the most venal corporations; but, if Hamilcar wished to secure the permanent support of the Carthaginian community for his plan, which at the best could only be carried out after a series of years, he had to supply his friends at home with regular consignments of money as the means of keeping the mob in good humour.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/3-04-hamilcar-hannibal.asp?pg=11