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 Achaean Patriots
The Achaeans believed it their duty to display the independence of their state all the more, the less they really had; they talked of the rights of war, and of the faithful aid of the Achaeans in the wars of the Romans; they asked the Roman envoys at the Achaean diet why Rome should concern herself about Messene when Achaia put no questions as to Capua; and the spirited patriot, who had thus spoken, was applauded and was sure of votes at the elections. All this would have been very right and very dignified, had it not been much more ridiculous.
There was a profound justice and a still more profound melancholy in the fact, that Rome, however earnestly she endeavoured to establish the freedom and to earn the thanks of the Greeks, yet gave them nothing but anarchy and reaped nothing but ingratitude. Undoubtedly very generous sentiments lay at the bottom of the Greek antipathies to the protecting power, and the personal bravery of some of the men who took the lead in the movement was unquestionable; but this Achaean patriotism remained not the less a folly and a genuine historical caricature.
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Reference address : https://www.ellopos.net/elpenor/rome/3-09-war-antiochus-asia.asp?pg=52