Fill in the crossword puzzle

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Across
  1. 5. people who study the past and tell others about it
  2. 6. the study of the past through material remains
  3. 7. the period from when writing was introduced
Down
  1. 1. the period of history before written records were available
  2. 2. the study of coins
  3. 3. royal commands issued by rulers and kings
  4. 4. the study of old inscriptions or epigraphs