Around 300 A.D., a new and powerful kingdom emerged in West Africa. This kingdom was known as Ghana. Between 300 and 1200 A.D., Ghana controlled the export of salt and gold. They were also able to prosper from the collection of taxes on the many merchant caravans that traveled through their territory as they brought goods from one area to another.
Ghana controlled a vast area of over 100,000 square miles. A Ghanan king was referred to as the Ghana, just like a Egyptian king was referred to as the Pharaoh.
When I was younger, I could remember anything, whether it had happened or not.