New York City

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Across
  1. 2. the river that runs through New York City
  2. 3. which type of building is the tallest in New York City
  3. 5. which rock type is underneath the city
  4. 6. what towers where hit by a plane in 2001
Down
  1. 1. what war started in 1860
  2. 4. what borough is the only New York City part that is on the mainland