The Ghanaian Empire was around from c. 400 to c. 1200
Sources
http://utafebruary2011ancientghana.blogspot.com/2011/03/religion-in-ancient-ghana-ancient.html
"Religion Statistics by Country." -ReligionFacts. Web. 17 Sept. 2014
http://www.ghana.gov.gh
"Ghana" :Major Accomplishments. Web. 17. Sept. 2014.
"Ghana Profile." BBC News. Web. 19 Sept. 2014.
http://www.bbc.co.uk/worldservice/africa/features/storyofafrica/4chapter1.shtml
http://www.infoplease.com/country/ghana.html
everythingculture.com