CrosswordMint
Enigmatic Communications Through History
Moderate difficulty suitable for most players
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Across
  • 1. Early system sending coded messages via electrical pulses
  • 2. Visual signaling system using flags or arms in the 19th century
  • 3. Ancient technique of transmitting messages through rhythmic beats
  • 5. Ancient ram’s horn trumpet used in ceremonial signaling
Down
  • 4. Bird historically used to carry messages over distances
  • 6. Underwater instrument used to detect sound waves

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