Aztecs - People of the Sun

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Across
  1. 4. the place where the Aztecs settled
  2. 7. blood-thirsty people who are great engineers
  3. 9. one of the five lakes
Down
  1. 1. makeshift islands for farming and housing
  2. 2. the creator of the universe
  3. 3. the name of the city that the Aztecs made
  4. 5. one of the few produce that the aztecs grew
  5. 6. tunnels bringing fresh water into the city
  6. 8. the postal services at the time