What's the source of Countries and Provinces in Oracle Application?

Summary:

In the Edit Content Section in Profile Types, in a Section with the "Work History" template, there are two Content Section Properties named "Employer Country" and "Employer State or Province", and we would like to know what's the source of these fields.

Content (required):

These fields take their values from list of values that we cannot find in Setup and Configuration. Our question is: where can we find those lists and if it's possible to "edit" those lists.