Years ago, I remember being told a story of a man so wealthy, that when he travelled across Africa, he altered the very economic landscape. Is there an accurate and detailed account of this? I'm interested in the long term effects of that Grand Tour.
You're looking for Mansa Musa. We don't currently have and FAQ section about him (unless I missed it), but we probably should add one. In the meantime, here's the relevant search results for /r/AskHistorians.