Conversation so far:
Are there any other interesting aspects about this Norte Chico civilization article?
What was the Norte Chico civilization like?
In a 1973 paper, Michael E. Moseley contended that a maritime subsistence (seafood) economy had been the basis of the society and its remarkably early flourishing.
Why is the Norte Chico civilization's early flourishing remarkable?
Complex society in Norte Chico arose a millennium after Sumer in Mesopotamia, was contemporaneous with the Egyptian pyramids, and predated the Mesoamerican Olmec by nearly two millennia.

Question: What food sources did they have the most abundance of?
Self-contained rewrite: What food sources did they have the most abundance of?