historical times, the Berbers expanded south into the Sahara (displacing earlier populations such as the Azer and Bafour), and have in turn been mainly culturally assimilated in much of North Africa by Arabs, particularly following the incursion of the Banu Hilal in the eleventh century.
The areas of North Africa which retained the Berber language and traditions best have been, in general, Morocco, highlands of Algeria (Kabylie, Aurès et cetera) most of which in Roman and Ottoman times remained largely independent. The Ottomans did penetrate the Kabylie area; Turkish influence can be seen in food, clothes and music, and to places the Phoenicians never penetrated, far beyond the coast. These areas have been affected by some of the many invasions of North Africa, most recently that of the French.