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
Greece proper had greater occasion than Macedonia to congratulate herself on the favour of the ruling power; and the Philhellenes of Rome might well be of opinion that the calamitous effects of the war with Perseus were disappearing, and that the state of things in general was improving there. The bitterest abettors of the now dominant party, Lyciscus the Aetolian, Mnasippus the Boeotian, Chrematas the Acarnanian, the infamous Epirot Charops whom honourable Romans forbade even to enter their houses, descended one after another to the grave; another generation grew up, in which the old recollections and the old antagonisms had faded.
The Roman senate thought that the time for general forgiveness and oblivion had come, and in 604 released the survivors of those Achaean patriots who had been confined for seventeen years in Italy, and whose liberation the Achaean diet had never ceased to demand. Nevertheless they were mistaken. How little the Romans with all their Philhellenism had been successful in heartily conciliating Greek patriotism, was nowhere more clearly apparent than in the attitude of the Greeks towards the Attalids.
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Reference address : https://www.ellopos.net/elpenor/rome/4-01-gracchi.asp?pg=74