Though Interamna Lirenas was in the area now known as “Italy,” it had been set up by Rome as a “Latin” colony in 312 B.C.E., Launaro explains: “As such, its inhabitants were not considered Roman citizens, but citizens of a formally independent community, bound to Rome by a treaty of close political and military alliance. Following the so-called Social War (‘war with the allies’, from 91 to 88 B.C.E., Interamna was granted the status of a Roman municipium and its inhabitants became Roman citizens.”
While still having a large degree of administrative autonomy, its inhabitants would have then been entitled to vote in Rome’s assemblies and even run for public office, he explains.
Archives For roma
Pretty thorough breakdown of Roman history.
St. Peter’s Basilica, Basilica Sancti Petri, Basilica di San Pietro in Vaticano