Africa and the Challenges of the 21st Century: A Geographical Perspective: Africa and the Challenges of the 21st Century: A Geographical Perspective. م ج ج ل [Internet]. 2009 Jan. 1 [cited 2026 Feb. 13];4(4):293-326. Available from: https://jlgs.ly/ojs/index.php/ojsdata/article/view/58