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
Bestowal of Latin Rights on the Italian Celts
This measure related primarily to Italy proper, which at that time extended northward little beyond Ancona and Florence. In Cisalpine Gaul, which was in the eye of the law a foreign country, but in administration and colonization had long passed as part of Italy, all the Latin colonies were treated like the Italian communities. Otherwise on the south side of the Po the greatest portion of the soil was, after the dissolution of the old Celtic tribal communities, not organized according to the municipal system, but remained withal in the ownership of Roman burgesses mostly dwelling together in market- villages (-fora-).
The not numerous allied townships to the south of the Po, particularly Ravenna, as well as the whole country between the Po and the Alps was, in consequence of a law brought in by the consul Strabo in 665, organized after the Italian urban constitution, so that the communities not adapted for this, more especially the townships in the Alpine valleys, were assigned to particular towns as dependent and tributary villages. These new town-communities, however, were not presented with the Roman franchise, but, by means of the legal fiction that they were Latin colonies, were invested with those rights which had hitherto belonged to the Latin towns of inferior legal position.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/4-07-sulpician-revolution.asp?pg=39