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  2. List of countries by system of government - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    In a parliamentary republic, the head of government is selected or nominated by the legislature and is also accountable to it. The head of state is usually called a president and (in full parliamentary republics) is separate from the head of government, serving a largely apolitical, ceremonial role.

  3. List of armies by country - Wikipedia

    en.wikipedia.org/wiki/List_of_armies_by_country

    This is a list of Armies of the countries of the World. List of armies by country. Country Army Founded Endonym Ref. ... List of military special forces units;

  4. List of countries by median age - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    Currently, the median age ranges from a low of about 18 or less in most Least Developed countries to 40 or more in most European countries, Canada, Cuba, Hong Kong, Japan, South Korea, Taiwan, and Thailand.

  5. List of countries in the Americas by population - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_in_the...

    Pan-American countries by population, 2020. This is a list of countries and dependent territories in the Americas by population, which is sorted by the 2015 mid-year normalized demographic projections.

  6. List of countries by government debt - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    This is a list of countries by government debt. Gross government debt is government financial liabilities that are debt instruments. [ 1 ] : 81 A debt instrument is a financial claim that requires payment of interest and/or principal by the debtor to the creditor in the future.

  7. List of countries by oil production - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_oil...

    Top 5 oil-producing countries 1980–2022 World oil production. This is a list of countries by oil production (i.e., petroleum production), as compiled from the U.S. Energy Information Administration database for calendar year 2023, tabulating all countries on a comparable best-estimate basis.

  8. List of Middle Eastern countries by population - Wikipedia

    en.wikipedia.org/wiki/List_of_Middle_Eastern...

    The following is a list of countries in the Middle East sorted by projected population. Table. Rank Country (or dependent territory) 2020 projection [1] % of pop.

  9. Country code top-level domain - Wikipedia

    en.wikipedia.org/wiki/Country_code_top-level_domain

    The IANA is not in the business of deciding what is and what is not a country. The selection of the ISO 3166 list as a basis for country code top-level domain names was made with the knowledge that ISO has a procedure for determining which entities should be and should not be on that list. —