Inca Tax Records Were Tied Up in Knots, Study Says


  • Aug 25 2010 10:34 PM

    John Garrett


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In this National Geographic News article, read about evidence that Inca bureaucrats used mop-like knotted strings called khipu as "documents" in a sophisticated accounting system. Some experts say that khipus may have been a medium for recording historical information--possibly as a form of writing. Links to other stories, photos, videos and a Web site are also found on this page.

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