The people are of the Maghreb and the Sahara speak various dialects of Berber and Arabic, and almost exclusively follow Islam. The Arabic and Berber groups of languages are distantly related, both being members of the Afro-Asiatic family. The Sahara dialects are notably more conservative than those of coastal cities (see Tuareg languages). Over the years, Berber peoples have been influenced by other cultures with which they came in contact: Nubians, Greeks, Phoenicians, Egyptians, Romans, Vandals, Arabs, and lately Europeans. The cultures of the Maghreb and the Sahara therefore combine indigenous Berber, Arab and elements from neighboring parts of Africa and beyond. In the Sahara, the distinction between sedentary oasis inhabitants and nomadic Bedouin and Tuareg is particularly marked.
The diverse peoples of the Sahara are usually categorized along ethno-linguistic lines. In the Maghreb, where Arab and Berber identities are often integrated, these lines can be blurred. Some Berber-speaking North Africans may identify as "Arab" depending on the social and political circumstances, although substantial numbers of Berbers (or Imazighen) have retained a distinct cultural identity which in the 20th century has been expressed as a clear ethnic identification with Berber history and language. Arabic-speaking Northwest Africans, regardless of ethnic background, often identify with Arab history and culture and may share a common vision with other Arabs. This, however, may or may not exclude pride in and identification with Berber and/or other parts of their heritage. Berber political and cultural activists for their part, often referred to as Berberists, may view all Northwest Africans as principally Berber, whether they are primarily Berber- or Arabic-speaking (see also Arabized Berber).