I formulate and estimate a model of externalities within countries and technological interdependence across countries. I find that external returns to scale to physical capital within countries are 8 percent; that a 10 percent increase of total factor productivity of a country's neighbors raises...

For many years now, the development intervention in the Niger Delta has not achieved desired results, as the amazing paradox of underdevelopment in the area continue to deepen. That is why the paper explains the mistakes made by the different commissions and proposes the adaptation of an...