Indus valley civilisation

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Across
  1. 4. Practice which changed everything
  2. 5. Oldest form of stamps
  3. 7. Called the 'mound of death'
  4. 9. Famous bronze figure
Down
  1. 1. Statue of 'priest-king'
  2. 2. Monument in mohenjo-daro
  3. 3. Other civilisation-used to trade with
  4. 6. Early form of writing
  5. 8. River this was based on