Sub-Saharan African countries is often known for its slow growth and widespread of poverty. Among the 20 poorest countries in the world 16 are Sub-saharan African countries. Factors for its under performance ranges from macroeconomic variables to its political and economic institutions including the quality of political leaders. Most studies only focused on the fundamental sources of growth like investment,human capital to explain the performance of Sub-saharan African Countries. Beside this the studies are not take in to account the reverse effect of growth on the quality of institution which lead to the endogenity of those variables that causes a problem in estimation and decreases both internal validity and external validity of the work. Thus this book give better insight for the one who is interested on this issues and how to resolve it.