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
Proto-Berber language has produced a comprehensive reconstruction of Proto-Berber morphology based on Tuareg. Additional work on the reconstruction of Proto-Berber morphology was done by Maarten Kossmann. Proto-Berber had no grammatical case. Its descendants developed a marked nominative that is still present in Northern Berber and Southern Berber/Tuareg. In some cases, Proto-Berber lost it thereafter, recently in Eastern Berber and Western Berber (Zenaga). The relics of the ancient morphological segments preserved in the modern varieties, in the Libyan inscriptions and in the ancient toponymical stratas show that the basis of word formation is a monosyllabic lexical unit (vc, cvc) whose vowels and consonants