Chapter 1

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Across
  1. 2. Integral
  2. 4. Decade
  3. 8. Era
  4. 9. line Time line
  5. 11. Notes
  6. 14. Calendar Gregorian Calendar
  7. 16. archaeology
  8. 17. species
  9. 18. Anthropology
Down
  1. 1. Time
  2. 3. Internet
  3. 5. artifact
  4. 6. Calendars
  5. 7. Century
  6. 10. Paleontology
  7. 12. Fossils
  8. 13. Calendar Julian Calendar
  9. 15. History