This is by population, not by area (as indicated in the quiz description). Mauritania is very large . . . but not a ton of people live there :)
There were a number of other things that needed to be updated (Swaziland -> Eswatini means that that country no longer has a "long" name, for example), so I went ahead and did that.
There were a number of other things that needed to be updated (Swaziland -> Eswatini means that that country no longer has a "long" name, for example), so I went ahead and did that.