The difference between the nationalities when asking a question

I have picked up a habit of saying NO? when I finish a question. I have figured out where it came from.
Generally, the Latin speaking people like to add that at the end of a question. Manu, Gemma from Barcelona in my corridor always add that. And also my French, Swiss French friends always do that. But you don't find it so common in the Germanic languages. I know at least in English, people say more often RIGHT? at the end. Well, some others say Isn't IT? too but that doesn't really count.

I don't know if that has something to do with the attitude or the confidence in one's self or what. But it is certainly an interesting thing when you talk to a different national next time