<span>Greece would have had a much harder time with unifying their area because each city had its own government and pretty much did its own thing. For example, Sparta and Athens were both Greek cities, but their governments were totally different and it would have been hard to unify them. Greece cities were also pretty isolated because there are a lot of mountains, and other difficult geography, and it was hard to get from one city to another.</span>
Of the choices provided all of them are correct except for "Guam revolted". That had nothing to do with the United States intervening.
Answer:
By 300 BC, it became one of the largest and richest cities in antiquity, with its colonies, vassals, and satellite states constituting more territory than any other polity in the region. Carthage's wealth and power rested primarily on its strategic location, which provided access to abundant fertile land and major trade routes.
Explanation
There was also A very succsesful period of trades.
Hope this helps, good luck!