Communication Tool

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Across
  1. 4. A modern way to communicate over long distances.
  2. 5. A system of writing using pictures.
Down
  1. 1. Paintings Early drawings on cave walls.
  2. 2. A set of letters used to write words.
  3. 3. A device used to send messages over long distances.
  4. 6. A tool used to write.