4
With a slight modification of the code you should be able to accomplish what you want as long as you have a field for it to sort on.
If all you want to do is sort by the country and you have one field you want to sort it on you could modify the database query to do this very simply. I do not know the module myself to do it for you but if you are getting the list you want and you have the fields available at worst it should be a simple modification to get what you want.