My puzzle

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Across
  1. 1. A house poor people got in the induse river
  2. 4. Largest civilization
  3. 7. Indus valley trading partners
  4. 8. Modern day game
  5. 10. Belive they create dice
  6. 12. Two modern day countries where the cities developed
  7. 14. A nice house in the indus river
  8. 15. What children were taught to do
Down
  1. 2. What children were taught to do
  2. 3. six sided cube
  3. 5. Two modern day countries where the cities developed
  4. 6. Flat piceis of stone
  5. 9. Largest civilization
  6. 11. A tall mouatin
  7. 13. would teach children how to write and read