With a total area of 2,381,741 square kilometres (919,595 sq mi), Algeria is the tenth-largest country in the world and the largest in Africa, and in the Mediterranean].[14] The country is bordered in the northeast by Tunisia, in the east by Libya, in the west by Morocco, in the southwest by Western Sahara, Mauritania, and Mali, in the southeast by Niger, and in the north by the Mediterranean Sea. Algeria is a member of the African Union, the Arab League, OPEC and the United Nations, and is a founding member of the Arab Maghreb Union.
The territory of today's Algeria was the home of many ancient prehistoric cultures, including Aterian and Capsian cultures. Its area has known many empires and dynasties, including ancient Berber Numidians, Carthaginians, Romans, Vandals, Byzantines, Arab Umayyads, Berber Fatimids, Berber Almoravids, Berber Almohads and later Turkish Ottomans.
EtymologyThe country's name derives from the city of Algiers. The most common etymology links the city name to al-Jazā'ir (الجزائر, "The Islands"), a truncated form of the city's older name Jazā'ir Banī Mazghanna (جزائر بني مزغنة, "Islands of the Mazghanna Tribe"),[15][page needed][16][page needed] employed by medieval geographers such as al-Idrisi.