Nigeria is still a huge exporter of crude oil, but traditionally it's had to buy refined petroleum products back from Europe or from the Middle East. We see Dangoti, one of the richest men in Africa from Nigeria, what he's been struggling to do: build a huge refinery for petroleum products and supply his own domestic market. And then going beyond import substitution to create companies that can export, not just raw materials, but software products, clothing and fashion could lead to African nations having a more prominent role internationally.