Video: The most populous nation in Africa is Nigeria. Created by the British colonialists a century ago, it embraces three nations who hate each other. Two of these nations are Christian; one of them is Muslim. But the Muslim Hausa are the biggest and most powerful nation, controlling the army. The Christian Yoruba are the richest, dominating trade and commerce. The restoration of democracy has not reduced hostility. Muslim fundamentalists want to improve Muslim law. Violence and massacre are commonplace. Only petrol dollars keep Nigeria going. What does this all mean for Nigeria and Africa?