good for you, when you make an assumption you make an A$$ out of who and who?
not me-- I choose NCHAR or NVARCHAR, because it's not fair to take your assumptions and shove them into your code.
design to spec-- if it's not specified, plan for the worst or ask for clarification.
who is to tell me which country the question-asker was in?
If I knew that-- then I would know the answer, most likely.
But still-- it's not fair to assume anything ever.