Forums  /  Super Mario series  /  Super Mario Bros. 3  /  what version for my

I have a question I read the post of Kirua on the different version is I play with a Rom of the game in French on FCEUX in the setting of the emulator I put PAL and suddenly my Rom and well PAL normally so why do I still get around to copying people who are on ROM / NES in American version I do not know in that category I am