Maybe you're not traveling to the Cradle of Democracy this Independence Day. (And, by the way, no one agrees on where that is. Some say it's Philadelphia, others Massachusetts, others Jamestown, Va., and let us not forget Greece.) Wherever it is and wherever you are, it's a good idea to stop and remember the vast geography of our country, the genius of its founders and all the people and symbols that go with it. Here’s a quick quiz to help you contemplate all of the above.