jaqunatetharrington

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Across
  1. 4. natrual boundaries
  2. 7. trade
  3. 8. social order
  4. 9. reflects a society's technology
  5. 10. sahara desert and desertification
  6. 11. domestication
Down
  1. 1. unify
  2. 2. along river vallys
  3. 3. affects distribution of population
  4. 5. ends in 1991 Chinese revolution
  5. 6. diverse geographical features