Short answers, pulled from the story.
The Italic peoples are an ethnolinguistic group identified by their use of Italic languages, a branch of the Indo-European family. In the strict linguistic sense, the term covers the Osco-Umbrians and the Latino-Faliscans. In broader historical usage, it extends to all ancient peoples of Italy, including non-Indo-European groups like the Etruscans and Rhaetians.
Linguists and archaeologists associate the earliest proto-Italic peoples with the Bell Beaker and Urnfield groups, who migrated to the Italian peninsula from north and east of the Alps during the Bronze Age. Their ultimate origin traces back to migrations from the Yamnaya culture of the Eurasian steppe, which spread into the Danube Valley between 3100 and 3000 BC.
The Proto-Villanovan culture dominated the Italian peninsula before 1000 BC and is associated with the arrival of proto-Italic peoples. It is identified by cremation burials using double-cone funerary urns decorated with geometric designs and by elite graves containing bronze armour and horse harness fittings. Major excavated sites include Frattesina in the Veneto, Bismantova in Emilia-Romagna, and a site near the Monti della Tolfa north of Rome.
The Social War was a rebellion in the early first century BC in which several Italic tribes rose against Roman rule. The Marsi and the Samnites were among the chief participants. After Rome's victory, all peoples in Italy except the Celts of the Po Valley were granted Roman citizenship.
A study published in Science in November 2019 examined six Latin males buried near Rome between 900 BC and 200 BC. They carried roughly 25 to 35 percent steppe ancestry. The genetic difference between the Latins, the Etruscans, and the preceding Proto-Villanovan population was found to be statistically insignificant, and Iron Age Italic and Etruscan samples overlap with present-day Italians and other west Mediterranean populations.
The Etruscans developed early forms of theatrical literature, and the historian Varro records a figure named Volnius who wrote tragedies in the Etruscan language. The Samnites contributed the Atellan Farce comedic form, which influenced Roman dramaturgy, and built theaters at Pietrabbondante in Molise and at Nocera Superiore whose foundations the Romans later reused.