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Sahara - Wikipedia
Location, History, Map, Countries, Animals, & Facts - Britannica
Sub-Saharan Africa - Wikipedia
Sahara summary | Britannica
Sahara Desert - WorldAtlas
What Really Turned the Sahara Desert From a Green Oasis Into …
Africa: Physical Geography - Education
Sahara - Arid, Hot, Desert | Britannica
Africa Overview: Development news, research, data | World Bank
6.1: The Physical Landscape of Sub-Saharan Africa