I think vonderhsg was talking about the U.S. in terms of countries and not continents but if you want to brag that it only takes 44ish countries combined to beat the GDP of the U.S. you go right ahead :P
@histerik: why the unnecessary, inane anti-American comments? Funny how the ignorant masses have the world's largest GDP, the best universities AND manage to come up with not just the cartoon above, but the infrastructure allowing people around the world to enjoy it