8. United States of America
US have 0.91 HDI; with more than 313 million populations where 77.1% are white, 12.9% black and 4.2% Asian. The rest are ethnic groups from Hawaii, Alaska and the Pacific islanders. Its total population have 97% literacy. It has a leading industrial power in the world; extremely diversified and technologically advanced. Indeed, it’s one of the countries with highest standard of living in the world!
