Question

how can we measure the economic development of any country?

Answer 1

Here is my list of the most commonly used measures of economic development:
GNP per capita. [wbgnpmap] [gnppctab.htm]
Population Growth [wrpopgr]
Occupational Structure of the Labor Force [wraglab]
Urbanization [wrurban]
Consumption per capita. [wwenergy] ...
Infrastructure [wwtrans]