The First, Second, and Third Samnite Wars 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.

Campania is an administrative region of Italy; most of it is in the south-western portion of the Italian peninsula, but it also includes the small Phlegraean Islands and the island of Capri. The capital of the Campania region is Naples. As of 2018, the region had a population of around 5,820,000 people, making it Italy's third most populous region, and, with an area of 13,590 km2 (5,247 sq mi), its most densely populated region. Based on its GDP, Campania is also the most economically productive region in southern Italy and the 7th most productive in the whole country. Naples' urban area, which is in Campania, is the eighth most populous in the European Union. The region is home to 10 of the 58 UNESCO sites in Italy, including Pompeii and Herculaneum, the Royal Palace of Caserta, the Amalfi Coast, the Longobardian Church of Santa Sofia in Benevento and the Historic Centre of Naples. In addition, Campania's Mount Vesuvius is part of the UNESCO World Network of Biosphere Reserves.