Ranking inventions

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Across
  1. 4. make cotton fast
  2. 5. send messages
  3. 9. mow wheat
  4. 10. big fast ships
  5. 11. mass produce steel
  6. 12. Get soil ready for planting
Down
  1. 1. powered by water
  2. 2. trains go on it
  3. 3. Produce multiple spools of threads
  4. 6. a boat powered with steam
  5. 7. make shirts
  6. 8. Replicate parts so you can mass produce and fix things