Topic summary
Chimú

Extracted from the Wikipedia article Chimor.
Subsistence and agriculture
The Chimú used walk-in wells, similar to those of the Nazca, to draw water, and reservoirs to contain the water from rivers. This system increased the productivity of the land, which increased Chimú wealth and likely contributed to the formation of a bureaucratic system. The Chimú cultivated beans, sweet potatoes, papaya, and cotton with their reservoir and irrigation system. This focus on large-scale irrigation persisted until the Late Intermediate period. At this point, there was a shift to a more specialized system that focused on importing and redistributing resources from satellite communities. There appears to have been a complex network of sites that provided goods and services for Chimú subsistence. Many of these sites produced commodities that the Chimú could not.