This site offers a range of free multiple-choice quizzes to test and improve your knowledge of the United States of America.
Each quiz includes 15 questions on the chosen subject area, and you can go through that set of questions as many times as you like until you're getting them all right, or take new quizzes on the same subject.
The main quiz sections are :
History - Quizzes on the the history of America, from pre-colonisation to the present day.
Geography - Test your knowlege of the American states, capitals, mountains, rivers, and more!
Society - How well do you understand the American systems of government and law, or the way of life of American society?
Culture - Quizzes on the culture of America, from great writers to great monuments - find out how much you know!