Origin of astronauts who've flown on one of the Space Shuttles?
This is close enough that I'm going to have to give it to you. Some of the astronauts who participated in Space Shuttle missions had dual citizenship, so it sent me down a rabbit hole of research whether to count Spain as one of the countries (dual American/Spanish citizenship), but then later I found someone else from Spain. So that's why Spain is included. Iceland isn't included, because while Bjarni Tryggvason was born there, he moved to Canada as a child and has Canadian citizenship. I remember people joking about that at the time he went on his shuttle mission, about a "Viking" aboard the shuttle.
So the map is based on shuttle astronauts' citizenship, not birthplace, and in case of duals, which country they actually flew for.
I'd thought of including the ISS, but in that case the map would also have included Brazil, Great Britain, Denmark, Belarus, Kazakhstan, Turkey, United Arab Emirates, South Korea, Malaysia, and South Africa.
The reason why I mentioned awards being somewhat relevant is because at least in Canada, representing Canada as an astronaut is one way of getting noticed to receive an Order of Canada award. I've no idea if astronaut status leads to this sort of thing in other countries (whatever their equivalent might be).
Anyway... Canada will never not be proud of Chris Hadfield, who went on two shuttle missions and went on to command the International Space Station. He's amazing.
So thanks everyone, and you all managed to surprise me. Not one person mentioned cats or penguins!