What was a key agricultural advancement used by the Incas?

The Incas were renowned for their innovative agricultural practices, one of which was terrace farming. This method involved creating stepped platforms built into the mountainsides, allowing them to farm on otherwise steep and rocky terrain. This advancement enabled them to cultivate a variety of crops, including potatoes, maize, and quinoa, which were essential for sustaining their large population.

Terrace farming helped to manage water runoff and soil erosion, optimizing the nutrient absorption of the crops. The Incas developed sophisticated irrigation systems that further supported agriculture on these terraces, demonstrating their advanced understanding of agricultural engineering and environmental adaptation. These terraces not only maximized arable land but also showcased the Incas' remarkable ability to harmonize their agricultural practices with their mountainous environment.