ancient civilizations

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Across
  1. 6. mesopotamian other name
  2. 7. egyptian civilizations other name
  3. 8. streach of river nile
  4. 10. time when the hyksos ruled Egyptian civilization
Down
  1. 1. best plumbing & sewage system
  2. 2. harrappan civilizations wonder
  3. 3. most common crop in indus valley
  4. 4. change of course main reason of decline
  5. 5. sorrow of china
  6. 9. length of great wall of china