World's Poorest Countries: The rankings below were published in the United Nation's 2011 Human Development Report and reflect the countries with the lowest human development. 1. Congo (Democratic Republic of the) 22. Rwanda 2. Niger 23. Djibouti 3. Burundi 24. Zambia 4. Mozambique 25. Comoros 5. Chad 26. Togo 6. Liberia 27. Uganda 7. Burkina Faso 28. Lesotho 8. Sierra Leone 29. Mauritania 9. Central African Republic 30. Haiti 10. Guinea 31. Nepal 11. Eritrea 32. Nigeria 12. Guinea-Bissau 33. Senegal 13. Mali 34. Yemen 14. Ethiopia 35. Papua New Guinea 15. Zimbabwe 36. Tanzania, United Republic of 16. Afghanistan 37. Madagascar 17. Malawi 38. Cameroon 18. Côte d'lvoire 39. Myanmar 19. Sudan 40. Angola 20. Gambia 41. Timor-Leste 21. Benin 42. Bangladesh Trends among the world's poorest countries Since 1970, there has been encouraging news emerging from developing countries. According to the UN's 2011 Human Development Report, life expectancy in developing countries had increased from 59 years in 1970 to 70 years in 2010. School enrollment climbed from 55% to 70% of all primary and secondary school-age children. Also, in the last forty years, per capita GDP doubled to more than ten thousand U.S. dollars. The World's average Human Development Index (HDI), which combines information on life expectancy, schooling and income, has increased 19% since 1990 (and 41% since 1970). This reflects large improvements in life expectancy, school enrollment, literacy, and income. Almost every country has benefited from this progress. Only three countries had a lower HDI in 2010 than in 1970. Those three countries were Zimbabwe, Zambia, and the Democratic Republic of the Congo. Poor countries are catching up with the wealthier countries, but not all countries made fast progress. For example, the countries in Sub-Saharan Africa have progressed slowly, largely due to the HIV epidemic. Countries in the former Soviet Union have been held back by an increase in adult mortality. To illustrate the income inequality between rich and poor countries, consider these facts: about 1.75 billion people live in multi-dimensional poverty, meaning extreme deprivation in education, health, and standard of living; 1.44 billion people out of the developing world's 6.9 billion people live on $1.25 per day; 2.6 billion people are estimated to be living on less than $2 a day. Multidimensional poverty varies by region from three percent in Europe and Central Asia to 65% in Sub-Saharan Africa. Source: Human Development Reports