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
Lastly, the intelligent munificence, with which the Lagidae welcomed the tendency of the age towards earnest inquiry in all departments of enterprise and of knowledge, and knew how to confine such inquiries within the bounds, and entwine them with the interests, of absolute monarchy, was productive of direct advantage to the state, whose ship-building and machine-making showed traces of the beneficial influence of Alexandrian mathematics; and not only so, but also rendered this new intellectual power--the most important and the greatest, which the Greek nation after its political dismemberment put forth--subservient, so far as it would consent to be serviceable at all, to the Alexandrian court.
Had the empire of Alexander continued to stand, Greek science and art would have found a state worthy and capable of containing them. Now, when the nation had fallen to pieces, a learned cosmopolitanism grew up in it luxuriantly, and was very soon attracted by the magnet of Alexandria, where scientific appliances and collections were inexhaustible, where kings composed tragedies and ministers wrote commentaries on them, and where pensions and academies flourished.
The mutual relations of the three great states are evident from what has been said. The maritime power, which ruled the coasts and monopolized the sea, could not but after the first great success --the political separation of the European from the Asiatic continent --direct its further efforts towards the weakening of the two great states on the mainland, and consequently towards the protection of the several minor states; whereas Macedonia and Asia, while regarding each other as rivals, recognized above all their common adversary in Egypt, and combined, or at any rate ought to have combined, against it.
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Reference address : https://www.ellopos.net/elpenor/rome/3-08-second-macedonian-war.asp?pg=7