Mr. Brown review puzzle

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Across
  1. 1. An ancient biblical city in mesopotamia
  2. 3. The city jesus was born in
  3. 5. Big ancient tombs for the wealthy
  4. 8. Ancient roman water transportation
  5. 10. Ancient region in between 2 rivers
  6. 11. A king who had a non-raided tomb
  7. 14. First mesopotamian ruler
  8. 15. Ancient river below mesopotamia
  9. 18. A city that forms a independent state
  10. 21. The first 5 books of the hebrew bible
  11. 22. A political system where everyone has say in voting
  12. 23. A half man half lion statue that guards pyramids
  13. 24. Romulus's brother who was killed by him
Down
  1. 2. Farming or growing crops
  2. 4. A long ancient poem
  3. 6. Training animals to do something
  4. 7. greek - like
  5. 9. The first king of rome
  6. 12. Building or construction
  7. 13. Capital of italy
  8. 16. When there is more food than needed
  9. 17. Roman dictator
  10. 18. Ancient greek island
  11. 19. River above mesopotamia
  12. 20. Deity or lord