Hi @CCNA (slick name, btw!),
The screenshot is super helpful. Unfortunately I don't think this is exposed via API at the moment--however, you can work with your account rep to open a feature request for this.
A good way in general to check for these things is to check the API Index, where you could type in "country" as a response attribute and find all the operations that return it. This is how I for example checked whether this was exposed.
Kindly,
John