The Lex Roscia was introduced in 49 BC by the praetor Lucius Roscius Fabatus on behalf of Julius Caesar. It granted the Roman citizenship to the Cisalpine Gauls in Transpadania, the area of Cisalpine Gaul north of the River Po. In 89 BC these peoples had already been granted Latin Rights with the Lex Pompeia de Transpadanis. With this law Julius Caesar sought to secure the support of the population of Transpadana in the run up to Civil War against Pompey. One of Caesar's most loyal legions was the Legio X Equestris, which was largely recruited among the Gauls of Gallia Cisalpina. The area had been undergoing decades of "Romanisation" since the subjugation of the Insubres|Insubre Gauls]] on 222 BC. A result of the Lex Roscia the Roman and Latin Latin colonies (such as Mediolanum and Ticinum) became municipia
into Roman '. This gave a significant impetus to the urbanization of this region.