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
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.