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
Character of Poetry and of Education in Latium
Thus there not only existed in Latium the same fundamental elements out of which Greek culture and art grew, but Greek culture and art themselves exercised a powerful influence over Latium in very early times.
Not only did the Latins possess the elements of gymnastic training, in so far as the Roman boy learned like every farmer's son to manage horses and waggon and to handle the hunting-spear, and as in Rome every burgess was at the same time a soldier; but the art of dancing was from the first an object of public care, and a powerful impulse was further given to such culture at an early period by the introduction of the Greek games.
The lyrical poetry and tragedy of Greece grew out of songs similar to the festal lays of Rome; the ancestral lay contained the germs of epos, the masked farce the germs of comedy; and in this field also Greek influences were not wanting.
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Reference address : https://www.ellopos.net/elpenor/rome/1-15-art.asp?pg=22