A question from Yahoo! Answers:
When a country is regarded as a developed country?
There is no “official” definition. Moreover, the moniker “developed” is not used in professional discourse. The World Bank, for example, divides countries into groups according to GNI per capita. For 2006, the countries were classified as follows: low income, $905 or less; lower middle income, $906 – $3,595; upper middle income, $3,596 – $11,115; and high income, $11,116 or more.