The human development index (HDI) refers to an index used by the UNDP (United Nations Development Fund) to measure a country’s development.
It is represented by a score range from 0 to 1, with most nations in the Europe and America scoring the highest while nations in Africa scoring the lowest.
The index consists of three variables: life expectancy at birth, per capita income, and the answer to the blank space to the question: education.
b. an organization of states that pursue shared goals.