I'm white and got 7/18 and it said "You can't tell the difference" but I think it's because some of them I had no idea. There were a few where I was really sure and I turned out to be right.
I think it's the same with white people. There are some who look unique to their country and I can tell with high confidence but for others, I have no idea; they just look like a generic white person.
For example, I think these public figures look/looked very stereotypical for their country:
German: Otto Von Bismarck
English/Scottish: Hugh Grant, David Bowie, Winston Churchill, Maggie Smith
I think it's the same with white people. There are some who look unique to their country and I can tell with high confidence but for others, I have no idea; they just look like a generic white person.
For example, I think these public figures look/looked very stereotypical for their country:
German: Otto Von Bismarck
English/Scottish: Hugh Grant, David Bowie, Winston Churchill, Maggie Smith
French: Napoleon, Jacque Chirac, Alain Delon, Gerard Depardieu, Francoise Hardy
American: Clint Eastwood, Abraham Lincoln, JFK
Swedish: Agnetha Faltskog