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Sahara - HighBeam Encyclopedia (Site not responding. Last check: 2007-09-11) |
 | | The E Sahara is usually divided into three regions—the Libyan Desert, which extends west from the Nile valley through W Egypt and E Libya; the Arabian Desert, or Eastern Desert, which lies between the Nile valley and the Red Sea in Egypt; and the Nubian Desert, which is in NE Sudan. |
 | | The principal ethnic groups of the Sahara are the Tuareg (of Berber origin), who dominate the mountains of the central Sahara; the peoples of mixed Berber and Arab origin in W Sahara; and the Tibu (Tébu), who dominate the Tibesti Massif. |
 | | The Sahara has undergone a series of wet periods, the most recent occurring c.5,000-10,000 years ago; it was not until c.3000 BC that the Sahara transformed into its present arid state. |
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