A lot of the questions do have a U.S. bias. That's because the questions are taken from the Fun Trivia site, and a lot of people that submit quizes are American.
You can get up to speed with American Presidents, and the state tree/gemstone/flower etc, by playing the quizes here. It's good fun, and there is a Lancashire section a few of us play in as well.
Fun Trivia Quizzes - World's Largest Trivia and Quiz Site!
The other day I knew I had 9 correct answers. The tenth was a question about American dog food brands of the 1930's. I was amazed when 7 people had 10/10. I like to think they had a different quiz from me, no one can guess that well so many times.
