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
Organization of the Provinces - Commercium - Property - Autonomy
This difference in the supreme administrative power was the essential distinction between the transmarine and continental possessions. The principles on which Rome had organized the dependent lands in Italy, were in great part transferred also to the extra-Italian possessions. As a matter of course, these communities without exception lost independence in their external relations.
As to internal intercourse, no provincial could thenceforth acquire valid property in the province out of the bounds of his own community, or perhaps even conclude a valid marriage. On the other hand the Roman government allowed, at least to the Sicilian towns which they had not to fear, a certain federative organization, and probably even general Siceliot diets with a harmless right of petition and complaint.(6)
6. That this was the case may be gathered partly from the appearance of the "Siculi" against Marcellus (Liv. xxvi. 26, seq.), partly from the "conjoint petitions of all the Sicilian communities" (Cicero, Verr. ii. 42, 102; 45, 114; 50, 146; iii. 88, 204), partly from well- known analogies (Marquardt, Handb. iii. i, 267). Because there was no -commercium- between the different towns, it by no means follows that there was no -concilium-.
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Reference address : https://www.ellopos.net/elpenor/rome/3-03-extension-italy.asp?pg=11