Algunas de las dunas de arena del Sahara pueden alcanzar los m de altura. Las formas terrestres del Sahara han sido progresivamente esculpidas tanto por el viento como por lluvias ocasionales. Este efecto del tiempo y el clima ha dado forma a las dunas de arena y a los campos de dunas o mares de tierra erg , a los valles de roca hamada , las planicies de gravilla reg , los valles secos y los salares shatt o chott. Los monzones se forman al calentar el aire sobre la superficie de la tierra durante el verano. El frecuente viento norte-este suele provocar tormentas de arena y mini tornados.
Mohammed ben Abdallah
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Historically, Berber nations spoke the Berber languages , which are a branch of the Afroasiatic language family. The Romans also used the word to refer to their neighbours to the north, in Germania roughly the area that is Germany today , as well as to Celts , Iberians , Gauls , Goths , and Thracians. Among the oldest written attestations of the word Berber is its use as an ethnonym in a document from the 1st century AD Periplus of the Erythraean Sea. Although these tribal names differ from the names used in those classical sources, they are nevertheless probably related to the modern Amazigh. The Meshwesh tribe was the first of these tribes to be identified by researchers. Scholars believe it is the same tribe that was called Mazyes by the ancient Greek writer Hektaios and Maxyes by the ancient Greek historian Herodotus.
The History of the Maghrib: An Interpretive Essay, by Abdallah Laroui
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Geographically situated between Libya to the east, Algeria to the west and the Mediterranean Sea to the north. Throughout its recorded history, the physical features and environment of the land of Tunisia have remained fairly constant, although during ancient times more abundant forests grew in the north,  and earlier in prehistory the Sahara to the south was not an arid desert. The weather is temperate in the north, which enjoys a Mediterranean climate with mild rainy winters and hot dry summers, the terrain being wooded and fertile. The Medjerda river valley Wadi Majardah, northeast of Tunis is currently valuable farmland.