I agree with @Andre. No country gets exclusive rights on stupidity be it boxing, politics or view of the world. As a great man once said,"the difference between stupidity and genius is that genius has its limitations". Its easy to say Americans but terribly stupid in its own right. They have 300 million people, have the most fans in the world and are the leaders in its broadcasts with everybody being connected.
The same math makes them the smartest.

If boxing ignorance was the question then Canada wins hands down. There is barely a ripple outside Quebec. Next time you see a random Canadian ask him/her who George Dixon was or Yvon Durrelle. I'd like pictures of the blank stare.