But as Jeffrey D. Sachs , the Columbia University economist and author of '' The End of Poverty , '' points out in his book , '' well-governed countries in Africa , such as Ghana , Malawi , Mali and Senegal , failed to prosper . ''
Africa
Mali
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Africa
Senegal
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Africa
Ghana
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Africa
Malawi
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ORGANIZATION
Columbia University
LOCATION
Africa
LOCATION
Ghana
LOCATION
Malawi
LOCATION
Mali
LOCATION
Senegal