Into Africa

Where is the best place on the globe for civil engineering opportunities?  My selection is Africa.  From the Economist and a special report on business in Africa:

"The costs of this mount up quickly.  A study in 2010 by Africa Country Infrastructure Diagnostic, a research project led by the World Bank, found that farmers four hours by road from a city of 100,000 people produced only 45% of what their land ought to yield.  Those six hours away produced just 20%, and those eight hours away produced a mere 5%.  Not only do they find it hard to sell their produce, they cannot easily buy fertilizers and equipment to get credit, because doing any of this requires access to a reasonably sized city.  And what is true for farmers is true for everyone being unable to move around means that children do not get educated, job opportunities are missed and businesses are not started."