I'd like to add my views about "how the Europe will looks like" after Carthage has consolidated itself in both Italy and Spain (practically after Rome's defeat). Rex, I partly agree and disagree with your latest points, the Carthage will most probably just expand into Western Mediterranian and had easy time here, the Gauls were their ally during the war against Rome after all so why not continue their alliance and integrate them into the empire?
As for the spread of Christianity, looking back at our history Romans were pretty cruel to Christians during its early period, but I highly doubt Carthage will do the same. From one of the sources above it is said that if the Carthage won the war against Rome, Hannibal and Hasdrubal will give full military honor to show their respect to the dead Roman commanders. Unlike the Romans, in which they cruelly cut dead Hasdrubal's head after gained victory and throw it into Hannibal's camp. Therefore spread of Christianity is most likely peaceful and met little to no resistance. And who knows where Pope might reside? Maybe the Pope's homeland will be in Carthage instead of Rome?
However, the same can probably be said too during the expansion of Islam in 600s. Instead of military conquest, the Arabs most probably spread Islam by making friendship with Carthage and through trades, just like how Islam later expand to India and Southeast Asia. From there, probably you'll see a Carthage with most of its populations of mix Christians and Islam (kind of 7th to 9th century Spain).
As for Carthage's survival into modern age, that's something I think unlikely to happen. At least in its European provinces, where in later time (3th to 4th century) there are numerous invasions by 'Barbarian' hordes. But then Carthage has very different army and strong navy than Romans, and they could play bigger roles. And as during most of its time the Greeks are relatively free from foreign occupation (assuming the Carthage didn't expand there), the Greeks might get stronger, particularly in navy and made numerous raids but that's something Carthage navy should be able to handle.
Finally in my opinion two things are sure: Latin won't be the major language of Europe and Colosseum won't exist.
Bookmarks