What is the reliable indicator of a countrys or states development?
Hi
You have asked an excellent question. There are a lot of key indicators but the most reliable one is the Human Development Index (HDI).
The HDI ( Human Development Index ) is a method to measure well being within a country. This is mainly a social measurement because it takes into consideration education , which is adult literacy rate and years of schooling, health care which is judged by life expectancy and finally the economic factor of GDP .