get https://profile.fansunitedapi.com/v1/countries
Returns a list of all countries in the world. Response is cached for 30 days.
Note: These are the actual countries (political entities), unlike the countries in the Football API.
For instance, the country United Kingdom in this API, in the Football API would be 4: England, Wales, Scotland and Northern Ireland.
Caching: 30 days
Authentication: none.