(Mali Empire reached its peak of success under Mansa Musa around 1307.) Geographically, the old Ghana is 500 miles north of the present Ghana, and occupied the area between Rivers Senegal and Niger.

Eighty-two-year-old technocrat-turned-politician, Sir Emmanuel Ojo, speaks to TUNDE OYEKOLA about his education in Nigeria and Ghana, and why he left politics, among other issues Can you lead us ...