How good is your geography knowledge? Check out this U.S. state capitals trivia quiz and see how many capitals of the U.S. states you can name. What is the capital of Idaho? Okay, let us ask you an easy one. Can you guess what the capital city of Alabama is? We have so many interesting questions about the U.S. states. Can you answer them all? Play the quiz and impress us by securing good marks. Learn more and train your brain.