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The Sahel region (/ s ə ˈ h ɛ l /; from Arabic ساحل (sāḥil) 'coast, shore'), or Sahelian acacia savanna, is a biogeographical region in Africa. It is the transition zone between the more humid Sudanian savannas to its south and the drier Sahara to the north.
The Sahel forms a belt up to 1,000 km wide, spanning Africa from the Atlantic Ocean to the Red Sea Main article: History of West Africa The Sahelian kingdoms were a series of centralized kingdoms or empires that were centered on the Sahel , the area of grasslands south of the Sahara , from the 8th century to the 19th.
The Sahel region (brown), proposed Great Green Wall (green), and participating countries (white) Satellite photo of the Sahara The Great Green Wall or Great Green Wall for the Sahara and the Sahel (French: Grande Muraille Verte pour le Sahara et le Sahel; Arabic: السور الأخضر العظيم, romanized: as-Sūr al-ʾAkhḍar al-ʿAẓīm) is a project adopted by the African Union in ...
Also in 2016, Quizlet launched "Quizlet Live", a real-time online matching game where teams compete to answer all 12 questions correctly without an incorrect answer along the way. [15] In 2017, Quizlet created a premium offering called "Quizlet Go" (later renamed "Quizlet Plus"), with additional features available for paid subscribers.
According to the official homepage, the organization's mandate is to invest in research for food security and the fight against the effects of drought and desertification for a new ecological balance in the Sahel. [1] The Sahel is a transition area between the very dry North and tropical forests on the coast.
The Great Mosque of Djenné, constructed in a Sudano-Sahelian architectural style, located in Mali. In the 7th century CE, North Africa was conquered by Muslim Arabs, providing the context in which Islam would eventually spread throughout sub-Saharan African populations—particularly those in East and West Africa—in succeeding centuries through their subsequent exposure to the Islamized ...
Based on Senegal river cycles, precipitation cycles of various El Sahel stations which are related to Solar (89–120 years) Wolf-Gleissberg cycles, and on relations to Nile floods and Equatorial lake levels, Yousef and Ghilly in 2000 anticipated that there is a considerable probability that drought will occur El Sahel Zone in 2005±4 years.
The Sahel's farmers have been largely cleared of blame for the 19th century's Sahel droughts. [17] The Sahel region's rains in the 1930s and 1940s were caused by the recent warming of the Indian Ocean, rather than by over-farming causing environmental degradation as previously assumed, according to a new joint Scidev /UN study. [ 17 ]