Leadership By theredjango Jan 1, 1155 Genghis Khan Period: Jan 1, 1155 to Aug 1, 1227 Genghis Khan lifespan Feb 12, 1809 Abraham Lincoln Period: Feb 12, 1809 to Apr 15, 1865 Abrham Lincoln Timespan Jul 18, 1918 Nelson Mandela Period: Jul 18, 1918 to Jun 20, 2012 Nelson Mandela Lifespan Still Alive.
