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
His successes were so brilliant, that at length the commander-in- chief, who could not otherwise prevent the cavalry officer from eclipsing him, deprived him summarily of the command of the light cavalry, and entrusted it to his own son. The Numidian, who had now for two years preserved the island for his Phoenician masters, had the measure of his patience exhausted by this treatment. He and his horsemen who refused to follow the younger Hanno entered into negotiations with the Roman general Marcus Valerius Laevinus and delivered to him Agrigentum.
Hanno escaped in a boat, and went to Carthage to report to his superiors the disgraceful high treason of Hannibal's officer; the Phoenician garrison in the town was put to death by the Romans, and the citizens were sold into slavery (544). To secure the island from such surprises as the landing of 540, the city received a new body of inhabitants selected from Sicilians well disposed towards Rome; the old glorious Akragas was no more. After the whole of Sicily was thus subdued, the Romans exerted themselves to restore some sort of tranquillity and order to the distracted island.
The pack of banditti that haunted the interior were driven together en masse and conveyed to Italy, that from their head-quarters at Rhegium they might burn and destroy in the territories of Hannibal's allies. The government did its utmost to promote the restoration of agriculture which had been totally neglected in the island. The Carthaginian council more than once talked of sending a fleet to Sicily and renewing the war there; but the project went no further.
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Reference address : https://www.ellopos.net/elpenor/rome/3-06-war-hannibal-cannae-zama.asp?pg=21