Americans can't find North Korea on the map, and people are having a field day with this fact. Granted, the country has been in the news recently, but so has Charlottesville, and one wonders how many non-Americans are able to find that town on a map, much less assign it to its proper state. And if I write the state as VA, most non-Americans will pause and scratch their heads. Doesn't make them dumb, merely means that their schools never saw fit to teach them abbreviations of U.S. states, never mind the states and their respective capitals.
Fact is, unless it's right in front of us, we won't really care. Europeans have a basic idea of there being a certain amount of states, but most likely couldn't name them all, never mind their capitals. Ask them about places in Asia, Russia, or Australia, and watch them be completely stumped.
In fact, you don't even have to go that far. Before I lived in Budapest, I'd regularly have to double check my ticket when I booked it at a travel agency, because it would always get issued to Bucharest. And this was a travel agency that catered to international students on a regular basis.
It's cool to bash a nation for being stupid. And I have nothing against taking the mickey for fun. But let's not call others stupid and make fun of them unless we ourselves can name every single island, city, and obscure place in the world.