Crossword Puzzle on Transmitting Knowledge

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Across
  1. 2. The modern Hindi script is based on this script.
  2. 4. The earliest known script that was devised by the Sumerians of Mesopotamia
  3. 5. The script for the visually impaired or blind people
Down
  1. 1. The plant that was used by the Egyptians to make paper
  2. 3. The traders who carried the Indian system of numbers to other countries