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 while the Kabyles called theirs "Taqbaylit", and the inhabitants of the Siwa Oasis called their language "Siwi". In Tunisia, the local Amazigh language is usually referred to as "Shelha", a term which has been observed in Morocco as well. One group, the Linguasphere Observatory, has attempted to introduce the neologism "Tamazic languages" to refer to the Berber languages. Berber is a branch of the Afroasiatic language family. Since modern Berber languages are relatively homogeneous, the date of the Proto-Berber language from which the modern group is derived was probably comparatively recent, comparable to the age of the Germanic or Romance