Final answer:
The most pronounced effect of the rising power of Rome in North Africa on Maghreb was cultural assimilation due to Rome's substantial resource needs and influence.
Step-by-step explanation:
The rising power of Rome in North Africa, especially its development of the region as the breadbasket of Rome, had multiple impacts on the Maghreb. However, the most pronounced effect of Rome's ascendancy was cultural assimilation and, to a lesser extent, enhanced trade networks. While economic prosperity was certainly a result of the region's agricultural productivity, the importation of Roman culture and administrative practices significantly transformed the indigenous societies of North Africa. Urban development, the Latin language, and Roman laws began to replace local traditions and languages.