Great presentation below by economist Niall Ferguson:

Niall Ferguson is a contributing editor for the Financial Times and a regular contributor to Newsweek. As a Historian and economic expert, he contributes often to television and radio shows in the U.K. and the U.S. He has authored multiple books, among them best-selling book “The Ascent of Money: A Financial History of the World“, published in 2008. He is a Professor of History at Harvard University and Professor at Harvard Business School. He graduated from Magdalen College (Oxford University) in 1985. He was a Hanseatic Scholar in Hamburg and Berlin and a Research Fellow at Cambridge. He was then a Professor and Financial History at Oxford.