I can't tell between a Hong Kongner and Singaporean, Thai & Laos or Cambodia, Pakistani & Indian, and many more from Asia alone. How about Danish and Swiss, Egyptian and Turkish....I travel around the world for a living, how about those that didn't get a chance to travel out of their country? To them all white are from (the only country they know) same apply to the African, Asian, Hispanic etc
Nothing wrong for not knowing where a country is as there are hundreds of countries around. Watch the Olympics and you will see many countries that you never even heard before.
I don't blame people for not knowing where Singapore is as we are such a small
Country with nothing to shout about. I will be surprise if one doesn't heard about USA.