I had to stop.Why the heck am i THINKING of their possible nationality?Friggin' Canadian? Australian? American? French?Gawd,... this is inane in today's world.
If you don't see a problem with it, explaining it won't help.
More importantly, which of the Seven Dwarfs are you?https://www.buzzfeed.com/quinnmchugh/which-one-of-the-seven-dwarfs-are-you-most-like-3ek4uI'm Grumpy, shock of all shocks.
American or Iranian?Egyptian or Australian?If you don't see a problem with it, explaining it won't help.
There are no quizzes asking to guess their "ethnicity" or "heritage". Such a thing would be racist.