History and the branches

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Across
  1. 6. ask questions of sources
  2. 7. cultural history
  3. 9. used by historians
  4. 10. history is measured in
  5. 13. information
  6. 14. history is about
  7. 17. branch about past government
  8. 18. order
Down
  1. 1. I dig for remains
  2. 2. I look at past cultures
  3. 3. language from which history came
  4. 4. its gone
  5. 5. historians tell this
  6. 6. studying the past
  7. 8. past men and women's history
  8. 9. history of people
  9. 11. buried remains
  10. 12. history as a subject
  11. 15. talking history
  12. 16. history of the economy