It was over control of the Western Mediterranean.
The Carthaginians and Romans were both competing for commercial interests and hegemony in the Mediterranean.
Parthians, Carthage, Persia, Visigoths, Ostrogoths, Vandals, Alans, and Huns
The Roman Empire .
Hannibal was not a Roman. He was a Punic Carthaginian. The city of Carthage is in what we call Tunisia today.
The story of Dido of Carthage is at best a legend perpetuated from Phoenician and Roman folklore.
The growing Roman empire and its North African proxies, and Carthage and its mercenaries.
roman
There is not much of a "Carthaginian" Carthage legacy. Carthage was destroyed in 146 BC by the Romans in the Third Punic War. it was rebuilt 150-200 years later as a Roman town and became the second largest Roman city in the western part of the Roman Empire and one of the seven largest ones in the whole empire. There is a legacy of Roman Carthage and the Roman province of Africa (today's Tunisia, western Libya and part of eastern Algeria). This was the area where Latin of western Christianity originated. This became the main form of Christianity in the western part of the Roman Empire, while the main one in the eastern part was Greek or Eastern Christianity. Later these two churches came to be called Catholic and Orthodox respectively.
Parthians, Carthage, Persia, Visigoths, Ostrogoths, Vandals, Alans, and Huns. Rome defeated most of these groups, but the Visigoths, Ostrogoths, and Huns (you may have heard of Atilla the Hun) were the groups that contributed to the collapse of the Western Roman Empire.
They were absorbed into the Persian Empire in the east, and Carthage was absorbed into the Roman Empire in the west.
Over control of the Western Mediterranean.
The Christians were not considered enemies of the Roman Empire. What was questioned was their loyalty to the imperial government, rather that their loyalty to the empire as such. Most Christians were citizens of the Roman Empire who converted from paganism to Christianity.