Peru
Inca used holes for bookkeeping
Archaeologists concluded that the 1.5-kilometer "band of holes" of roughly 5,200 depressions on Peru’s Monte Sierpe had been used by the Inca for market bookkeeping and later tax collection.
Archaeologists concluded that the 1.5-kilometer "band of holes" of roughly 5,200 depressions on Peru’s Monte Sierpe had been used by the Inca for market bookkeeping and later tax collection.
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