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 proceeds of fines were specially applied to the paving of the highways in and near the city, or to the erection and embellishment of public buildings. The wooden booths of the butchers, which stretched along the Forum on both sides, gave way, first on the Palatine side, then on that also which faced the Carinae, to the stone stalls of the money-changers; so that this place became the Exchange of Rome.
Statues of the famous men of the past, of the kings, priests, and heroes of the legendary period, and of the Greek -hospes- who was said to have interpreted to the decemvirs the laws of Solon; honorary columns and monuments dedicated to the great burgomasters who had conquered the Veientes, the Latins, the Samnites, to state envoys who had perished while executing their instructions, to rich women who had bequeathed their property to public objects, nay even to celebrated Greek philosophers and heroes such as Pythagoras and Alcibiades, were erected on the Capitol or in the Forum.
Thus, now that the Roman community had become a great power, Rome itself became a great city.
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Reference address : https://www.ellopos.net/elpenor/rome/2-08-law-religion-army-economy-nationality.asp?pg=40