The event which greatly influenced the population’s legal status, and perhaps even the administrative status of Cisalpine Gaul, was the Bellum Sociale in the years 90-88. Under the law which the Republic was forced to introduce during the difficult and hard war against the rebellious allies, Rome’s allies were granted civitas optimo iure. The laws such as lex Iulia, lex Plautia Papiria and lex Cornelia gave Roman citizenship to various groups of people and to individuals, regardless of their place of residence. The geographical aspect did not apply to Cisalpine Gaul, either, since all its inhabitants who had the Latin status received civitas optimo iure. This applied especially to the inhabitants of Latin colonies and viritim settlements from territories south of the Padus, i.e. Ariminum, Placentia, Bononia and Luce. The law also applied to settlements north of the Padus, i.e. the colonies of Cremona and Aquileia. However, Cisalpine Gaul was inhabited not only by people with the Latin status (mainly south of the Padus); its population was mainly native, the majority being Rome’s socii. Difficult struggles during the War of the Allies and the Republic’s wish to protect the northern flank forced it to undertake actions to solve the issue of the status of non-Latin population of Cisalpine Gaul, to which the laws lex Iulia, lex Plauta-Papiria and lex Cornelia had not applied. It is difficult to say whether all the settlements allied to the Republic were forced to accept the terms of the lex Pompeia de Transpadanis, but it seems that some of the socii, who likely had had a very advantageous foedus with Rome, could have kept their old treaties or received the privileges they had enjoyed before in addition to the terms of Pompeius’s law. It cannot be excluded that regulating the internal affairs in Cisalpine Gaul, and mainly in the territories north of the Padus, had a larger extent, since the sources (Plinius the Elder) tell us about a category of population called adtributio, which was assigned to bigger settlements of old allies, which received the status of Latin colonies under the lex Pompeia de Transpadanis. This was not the first legislative initiative of this kind since there had been laws that ‘assigned’ bigger settlements (e.g. Genoa) groups of people living outside their boundaries. In contemporary research, the lex Pompeia de Transpadanis also appears as the law that established the province in Cisalpine Gaul - lex provincia. The determination of the precise date when the province in northern Italy was created has been and still is contentious and the matter seems to remain unresolved. Historical sources offer only one mention confirming the creation of the province of Cisalpine Gaul; a fragment of the Late Antiquity work of the rhetor Licinianus says that the province was established by Sulla,which would mean that it was not created under the 89 law of Gn. Pompeius Strabo. A piece of information provided by Sallustius about the first governor of the province in turn tells us that it was G. Aurelius Cotta in 75, which again confirms that the province of Cisalpine Gaul existed in a period later than the law of Pompeius Strabo, and at the same time supports Licinianus’s account about Sulla creating the province.