Well, we do actually know that, but since the title of the quiz (The Americas Geography) indicates there may some U.S. geography questions on the quiz in addition to the questions about other parts of the Americas, I don't think we can expect to see too many questions about regions or countries outside of that area. There are several other region specific quizzes on the sight, but I've never seen that insinuation/accusation leveled at anyone from say Moldova or Palau. It sorta sounds like you may not like people from the USA .I really hope that isn't correct because some of us aren't so bad.
POOCH, you are completely missing the point. It's not about "not liking" people from the USA, it's about not liking insularity. This quiz purports to be about the Americas. I haven't counted but that must include about 40 countries or more. Yet more than half of the questions refer just to one - the USA. As if that was the only one that really mattered. PatrickDD249's observation is spot on.
POOCH's reply has already given you the answer: many of them don't want to learn such thing. He thinks it's normal that in a quiz they say is about the Americas there are more questions about the USA alone than about the other nearly 40 countries...
Please, be so kind and provide us with some suggestions for answers from different countries. Answers that one can reasonably expect an average human to know, not just some random villages in the middle of nowhere. Go on, we are waiting.