Vico would see NAFTA as a natural evolution of the institution of commerce as civilization moved from the age of heroes to the age of man.
Okay, but where does Vico claim that the Romans and Carthaginians had adopted something like NAFTA? The only thing they did was bicker about trade, and the Roman conquest of the Etruscans was in part due to Etruscan piracy (or from the Etruscan POV, interdiction) in restraint of Roman trade, just as the First Punic War (also known as The Sicilian War, it sez here) grew out of struggles over trade. Earlier on the Carthaginians had squeezed out their Phoenician brethren, and had largely squeezed out the Greeks in the western Med after the Peloponnesian War.