Arab-Berber of the Arab conquest of North Africa, and the intermarriage between the Arabian and Persian people who immigrated to those regions and local mainly Roman Africans and other Berber people; in addition, Banu Hilal and Sulaym Arab tribes originating in the Arabian Peninsula invaded the region and intermarried with the local rural mainly Berber populations, and were a major factor in the linguistic, cultural and ethnic Arabization of the Maghreb. Alongside Berber speakers, arabized Berbers form the core of the native populations of the Maghreb, namely Algeria, Libya, Morocco and Tunisia. Arab-Berbers primarily speak variants of Maghrebi Arabic, also known
Berber languages lives outside these regions in the bigger cities. Moroccan linguist Mohamed Chafik claims that 80 percent of Moroccans are Berbers. It is not clear, however, whether he means "speakers of Berber languages" or "people of Berber descent". The division of Moroccan Berber languages into three groups, as used by Ethnologue, is common in linguistic publications, but is significantly complicated by the presence of local differences: Shilha is subdivided into Shilha of the Draa River valley, Tasusit (the language of the Souss) and several other mountain languages. Moreover, linguistic boundaries are blurred, such that certain languages cannot accurately be described as