All countries have dumb people but a lot of Americans know of nothing outside of America. The students that i stayed with thought the film Eurotrip was an accurate view of Europe.
See I hear this from Euros all the time but I have seen plenty of people who know where Austria is. I think you like to perpetuate this to feel superior. You keep repeating the same urban myths as fact.
I know you will hate to hear it but we are just as well versed in geography as you are. I don't use Leno and random online 'tests' as my data however.