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Aztec Death Whistles: Why Are They So Scary and How Were They Used?
What are Aztec death whistles ... The Spanish conquered the Aztecs in the 1520s CE using superior weapons while benefitting ...
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Ancient Aztec death whistle had a terrifying effect on the human brain
ZÜRICH, Switzerland — Imagine an object so terrifying that its mere sound could make your blood run cold — a sonic weapon designed ... shocking secrets of the Aztec death whistle.