Many people evacuated when the smoke cloud formed but the people that stayed behind were soon killed by a poisonous gas that came down from the mountain
Toward the end of the 5th century, the warlike Samnites, an Italic tribe, conquered Campania, and Pompeii, Herculaneum, and Stabiae became Samnite towns.
After the second samnite war Pompeii became “allies” of Rome