Explanation: https://en.wikipedia.org/wiki/Thomas_Sankara

He really is a fascinating figure, though I must note that "without foreign aid" is not true - while Thomas Sankara took great efforts to minimize reliance on foreign aid, and, to an even greater degree, to trumpet that Burkina Faso was not reliant on foreign aid, Burkina Faso remained heavily dependent on foreign aid throughout his administration.

Still, the man was incorruptible, a visionary ahead of his time, and a tireless and humble leader. A fascinating figure.

(My main source being Thomas Sankara: A Revolutionary in Cold War Africa - fantastic book, if a bit short)