grammaticality - "Countries List" or "Country List"?

Duplicate of:
“User accounts” or “users account”
“Employee list” or “employees list”
Should a list of tokens be called a “token list” or a “tokens list”
“BookList” or “booksList?”
Is it correct to say “lesson count” or “lessons count”?
"Thing count" or "things count"
And others

Which of the following are correct?

1. Countries List


2. Country List

It is the title of a web page where users can view the list of countries and select one.