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
Hannibal - Reform of the Carthaginian Constitution - Hannibal's Flight
This pliability on the part of the vanquished, however was not mere patience and resignation. There was still in Carthage a patriotic party, and at its head stood the man who, wherever fate placed him, was still dreaded by the Romans. It had not abandoned the idea of resuming the struggle by taking advantage of those complications that might be easily foreseen between Rome and the eastern powers; and, as the failure of the magnificent scheme of Hamilcar and his sons had been due mainly to the Carthaginian oligarchy, the chief object was internally to reinvigorate the country for this new struggle.
The salutary influence of adversity, and the clear, noble, and commanding mind of Hannibal, effected political and financial reforms. The oligarchy, which had filled up the measure of its guilty follies by raising a criminal process against the great general, charging him with having intentionally abstained from the capture of Rome and with embezzlement of the Italian spoil--that rotten oligarchy was, on the proposition of Hannibal, overthrown, and a democratic government was introduced such as was suited to the circumstances of the citizens (before 559).
The finances were so rapidly reorganized by the collection of arrears and of embezzled moneys and by the introduction of better control, that the contribution due to Rome could be paid without burdening the citizens in any way with extraordinary taxes.
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Reference address : https://www.ellopos.net/elpenor/rome/3-07-peace-hannibal-third-period.asp?pg=15