Complexity development of societies (IMAGE)

PNAS Nexus

Complexity development of societies

Caption

The authors shift each Natural Geographic Area’s (NGA) time series with respect to a single anchor time, so that all 23 NGAs can be visualized at once. The first principle component, denoted by SPC1 is a component with almost equal contributions from all nine complexity characteristics.

Credit

Tobias Wand and Daniel Hoyer

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