Shanta Devarajan, Chief Economist for Africa, World Bank

African business is undergoing a revolution.From huge oil and gas wealth to the rise of a middle class eager to consume, the opportunities for investment seem limitless.But there are plenty of ongoing problems, not least with the concept of an African business model.At the New York Forum Africa in Gabon, the World Bank’s Chief Economist for Africa, Shanta Devarajan, talks to France 24’s business editor Owen Fairclough about the challenges ahead.