rest countries api - Robuta Search

https://www.educative.io/courses/get-started-with-the-rest-countries-api-in-javascript/an-overview-of-the-rest-countries-api

Learn about the REST Countries API and how it provides essential country data like capital city, currency, language, and region in JSON format.

https://countries.marcomadera.com/

A list of all the countries in the world, find information about the country

https://rapidapi.com/apilayernet/api/rest-countries-v1

REST Countries v1 Get information about countries via a RESTful API