USUS·CBS NewsKen Burns on how the American Revolution "turned the world upside down"Filmmaker Ken Burns says the American Revolution created a "new thing called a citizen."Lean LJul 4Read at CBS News→USUS·CBS NewsKen Burns on how the American Revolution "turned the world upside down"Filmmaker Ken Burns says the American Revolution created a "new thing called a citizen."Lean LJul 4Read at CBS News→