Linking to a particular Custom field value

Let’s say I have a bunch of posts with a custom field key is named “Country” and the value of the key is named “Canada”

How do I link to an alphabetical list of the posts that have “Canada” as the custom field value key on one page?

Basically I want people to be able to view all the posts from Canada on one page, France on another, etc., using custom fields and not categories.