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 league, which had to expect neither profit nor immediate injury from the thirst of Philip for aggrandizement, alone in all Greece looked at this war from an impartial and national- Greek point of view.
It perceived--what there was no difficulty in perceiving--that the Greek nation was thereby surrendering itself to the Romans even before these wished or desired its surrender, and attempted accordingly to mediate between Philip and the Rhodians; but it was too late.
The national patriotism, which had formerly terminated the federal war and had mainly contributed to bring about the first war between Macedonia and Rome, was extinguished the Achaean mediation remained fruitless, and in vain Philip visited the cities and islands to rekindle the zeal of the nation--its apathy was the Nemesis for Cius and Abydus. The Achaeans, as they could effect no change and were not disposed to render help to either party, remained neutral.
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Reference address : https://www.ellopos.net/elpenor/rome/3-08-second-macedonian-war.asp?pg=40