Kept records with knotted strings, terrance farming
A. Aztec
B. Inca
Both the Aztecs and the Incas used knotted strings as a form of record-keeping. This system, known as quipu, consisted of strings with various knots and colors that could represent different types of information. The Aztecs used quipu to record important data such as census information and tribute payments, while the Incas used it for administrative, economic, and historical purposes. In both civilizations, quipu was an important tool for record-keeping and communication.
Terrace farming, on the other hand, was a method of agriculture used primarily by the Incas. This technique involved carving steps into steep slopes or mountainsides and creating terraces, which provided flat surfaces for planting crops. Terrace farming allowed the Incas to cultivate land in areas with limited arable land and helped prevent soil erosion on the steep terrain of the Andes. This farming technique was essential for sustaining the Inca population and supporting their empire.