Adding a new county to Magento ver. 2.1.6

I have been trying to add a new country to the list of countries followed these steps:

  1. edited vendor\magento\zendframework1\library\Zend\Locale\Data\en.xml and other XML files
  2. added: <territory type="BQ">Bonaire</territory>
  3. added the country to the database “directory_country” iso codes: BQ|BQ|BES
  4. deleted the cache
  5. Admin > Configuration > General but I couldn’t locate the country.