The area of what is now Salerno has been continuously settled since pre-historical times, as the discoveries of Neolithic mummy remains documents. Inhabited by Oscan-speaking populations, the region was colonized by the Etruscans, who founded the city of Irnthi in the 6th century BC, across the Irno river, in what is today city quarter of Fratte, as a part of their "Dodecapolis" political model they essentially replicated in Campania. This settlement represented an important base for Etruscan trade with the nearby Greek colonies of Posidonia and Elea. It was occupied by the Samnites around the 5th century BC as a consequence of the Battle of Cumae (474 BC) as part of the Syracusan sphere of influence.