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Explore key data points about the world’s 196 countries, including population stats, political systems, languages, GDP, and more.

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Area: Encyclopaedia Britannica
Population, urban population, percent of population under 15 years, life expectancy: Toshiko Kaneda and Genevieve Dupuis, 2017 World Population Data Sheet (Washington, D.C.: Population Reference Bureau, 2017)
Capital, date of origin, annual population increase, literacy rate, per capita GDP: The World Factbook (Central Intelligence Agency)
Languages: The World Factbook; World Book Encyclopedia
Political system: Based on information from Freedom in the World 2017 (Freedom House), Encyclopaedia Britannica, and news accounts
Heads of government: Based on information from the GeoCities “Rulers” website (, The World Factbook, and news accounts
HDI: Human Development Report 2016 (United Nations Development Program)