They were left alone? e.g. the elites in Utica probably didn't mind the destruction of Carthage that much. However the core of the Carthaginian territory in North Africa was a collection of 'allied' cities dominated by Carthage (just like Roman Italy before the Social War). So there wasn't really much of a centralized system to keep in place (unlike in China and some other empires)
They were left alone? e.g. the elites in Utica probably didn't mind the destruction of Carthage that much. However the core of the Carthaginian territory in North Africa was a collection of 'allied' cities dominated by Carthage (just like Roman Italy before the Social War). So there wasn't really much of a centralized system to keep in place (unlike in China and some other empires)