what are all of the nations?
nigeria, south africa, ethiopia, kenya, tunisia, senegal, ghana, cameroon, egypt, mauritius, mozambique, algeria, madagascar, zimbabwe, tanzania, togo, burkina faso, central african republic, uganda, namibia, ivory coast
what was the rank of each nation?
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 15, 15, 18, 18, 18, 18
and which nation ranked the highest?
nigeria