The First, Second, and Third Samnite Wars (343–341 BC, 326–304 BC, and 298–290 BC) were fought between the Roman Republic and the Samnites, who lived on a stretch of the Apennine Mountains south of Rome and north of the Lucanian tribe.
The first of these wars was the result of Rome's intervention to rescue the Campanian city of Capua from a Samnite attack.
The second one was the result of Rome's intervention in the politics of the city of Naples and developed into a contest over the control of central and southern Italy.
Similarly the third war also involved a struggle for control of this part of Italy.
The wars extended over half a century, and also drew in the peoples to the east, north, and west of Samnium (land of the Samnites) as well as those of central Italy north of Rome (the Etruscans, Umbri, and Picentes) and the Senone Gauls, but at different times and levels of involvement.
By the time of the First Samnite War (343 BC), the southward expansion of Rome's territory had reached the River Liris (see Liri), which was the boundary between Latium (land of the Latins) and Campania. This river is now called Garigliano and it is the boundary between the modern regions of Lazio and Campania. In those days the name Campania referred to the plain between the coast and the Apennine Mountains which stretched from the River Liris down to the bays of Naples and Salerno. The northern part of this area was inhabited by the Sidicini, the Aurunci, and the Ausoni (a subgroup of the Aurunci). The central and southern part was inhabited by the Campanians, who were people who had migrated from Samnium (land of the Samnites) and were closely related to the Samnites, but had developed a distinctive identity. The Samnites were a confederation of four tribes who lived in the mountains to the east of Campania and were the most powerful people in the area. The Samnites, Campanians, and Sidicini spoke Oscan languages. Their languages were part of the Osco-Umbrian linguistic family, which also included Umbrian and the Sabellian languages to the north of Samnium.