Aincient macepotamia 9 questions

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Across
  1. 2. When was the attack on cachish ?
  2. 5. Which Empire observes the stars?
  3. 6. When did the person king Cyrys concur babylion?
  4. 8. How long has Mesopotamia existed?
  5. 9. What big thing did they build?
Down
  1. 1. How many BC before now, has the tablet describing a sale of land?
  2. 3. What is the name of the old code they spoke?
  3. 4. How many langueges has adapted from Hamamarabi?
  4. 7. How many Base 60 Systems are there?