Urban geography crossword puzzle

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Across
  1. 1. A settlement is purposefully laid out with a network of transportation routes
  2. 4. The United Nations defines mega-cities as cities with million citizens or more.
  3. 6. A settlement is usually found along the length of a resource, such as a river.
  4. 8. A is any place where a community is established.
  5. 9. Cities and surrounding areas are areas.
Down
  1. 2. Areas outside of cities are areas.
  2. 3. A large urban area is called a area.
  3. 5. is the substantial exchange of goods between cities, states, or countries.
  4. 7. A settlement is usually grouped around or at the center of a resource.