History crossword

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Across
  1. 7. birth of agriculture
  2. 8. study of tools
  3. 9. old stone age
  4. 11. wise human
  5. 12. early humans
  6. 14. new stone age
Down
  1. 1. study of ancient
  2. 2. study of ancient times
  3. 3. early humans
  4. 4. very large stone
  5. 5. study of the earth
  6. 6. study of human beings
  7. 10. long period of winter
  8. 13. middle stone age