The "Massalan Empire"? I doubt that Phocaean Greek of Massalia had quite the manpower to expand into Gaul. Dominant possibly over the over Greek colonies in the area such as Nicaea (Nice), Antipolis (Antibes) and Emporion (Ampuries). But the Gauls?! There was a good reason why Massalia voluntarily became a Roman protectorate in OTL. In such a situation, Marseilles' choices would include aligning itself with Carthage, Syracuse, or submitting to the Arverni, whom were very powerful in Gaul between the 3rd-2nd centuries BCE.
They did a fair bit OTL. That and the prestige of a bigger empire.Why is Carthage expanding into Hispania?
They did a fair bit OTL. That and the prestige of a bigger empire.
Well, they have gone through about 150 years of butterflies by the second map, and the "threat" of Macedonia had some effect on them.They did as the result of the Punic Wars. And Carthage had no interests in empire like that before her interactions with Rome and the compromise of her republic. Carthage was far more interested in securing favorable terms of trade with independent partners, rather than subjugating them.