Ancient X-Files

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Ancient X-Files: Decoding the Incas
Decoding the Incas
Season 2  |  Episode 4  |  National Geographic  |  September 10, 2018

The Incas ruled most of South America 500 years ago without a written language, but they may have had a three dimensional communication system made from knots.

The Incas ruled most of South America 500 years ago without a written language, but they may have had a three dimensional communication system made from knots.

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