2. Central African Republic
Life expectancy at birth (in years): 53.9
Mean years of schooling: 4.3
Gross national income per capita: $966
According to the World Bank, more than 70% of the population of Central African Republic lives well below the poverty line. In the rankings compiled by Human Development Index, Central African Republic ranked 188 out of 189 countries.
Life expectancy at birth (in years): 52.5
Mean years of schooling: 2.6
Gross national income per capita: $1,364
Topping the list of the 25 Most Underdeveloped Countries in the World is Chad, which is also among the poorest countries in the world. The economy of the country as well as its social performance are largely to blame for the lack of development, which in turn are due to a lack of implementation of the law and fragility of institution.