The Romans, with gross ill-faith and injustice, took advantage of a
revolt against Carthage by her mercenary troops to deprive her of
Sardinia and Corsica (238 B. C.), and Sardinia was made into a province.
Their next exploit was the conquest of Cisalpine Gaul, which was
completed 222 B. C., and the Roman hold upon the new territory was
confirmed by the establishment of military colonies at Placentia and
Cremona.