I'm curious as to what the result might be if there is a population migration or invasion from the Steppe peoples (such as the Huns) about 650 years earlier than occurred historically - or right around the time of the First Punic War. At that time, Rome was still a city-state (which held a significant amount of Italian territory), Carthage was still a major state, Greece was city-states, and so on. What would a steppe invasion or population migration possibly do in this period, with no real unified powers to stand against them?