1. This is the city’s flag
  2. Here Wrigley’s invented chewing gum
  3. Charlie Chaplin made some of his films here
  4. Adler and Sullivan invented the skyscraper here
  5. The tallest building in America is here
  6. Louis Armstrong recorded some of his work here
  7. This was Al Capone’s backyard
  8. The atom was split here in the University of Chicago
  9. It sits adjacent to the largest lake in the world
  10. It is the home city of Barack Obama – possibly the first black American president.
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