41 countries

A developed country, or advanced country, is a country that has a high quality of life, developed economy, and advanced technological infrastructure relative to other less industrialized nations. Most commonly, the criteria for evaluating the degree of economic development are the gross domestic product (GDP), gross national product (GNP), the per capita income, level of industrialization, amount of widespread infrastructure and general standard of living. Which criteria are to be used and which countries can be classified as being developed are subjects of debate. Different definitions of developed countries are provided by the United Nations Department of Economic and Social Affairs, the World Bank, the Development Assistance Committee, the International Monetary Fund, the Paris Club, moreover, HDI ranking is used to reflect the composite index of life expectancy, education, and income per capita.