Campania existed during the Roman era as a Greek territory.
Since the Samnites were more warlike than the other Oscan populations, they easily took over the cities of Capua and Cumae, in an area which was one of the most prosperous and fertile in the Italian Peninsula at the time
As the majority of Southern Italy was under Roman control at the time, the sole major remaining independent settlement in the region was the Greek colony of Neapolis, and when the city was eventually captured by the Samnites, the Neapolitan Greeks were left with no option but to call on the Romans, with whom they established an alliance, setting off the Second Samnite War

