Answer :
Final answer:
The Inca civilization used a system called a quipu for calculations, which used knotted strings to represent various pieces of information. Its main purpose was to serve as a comprehensive recordkeeping system.
Explanation:
The Inca calculation system, particularly in the region of Machu Picchu, relied on an ingenious system called a quipu to complete calculations. This was not a written system, but a method of record keeping using knotted strings. Each knot and string had a distinct meaning understood by those educated in its use, creating a diverse array of combinations possible.
The quipu was versatile and was used to store both qualitative and quantitative data, including census and tax data, land allocations, military movements, and even astronomical observations. Thus, the Main Purpose of the quipu was as a comprehensive recordkeeping system for the Inca.
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