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Unverified50% confidenceFactExact time

Ancient Amazonian societies are anthropologically classified as 'complex chiefdoms,' characterized by hierarchical differentiation, division of labor, and regional trade networks, but without writing systems or bureaucratic institutions

1
Sources
50%
Confidence
Long-term
Relevance
8/9/2026
First Seen

Sources

亚马逊失落文明：3%雨林面积曾养活300万人口

Related Claims

UnverifiedBefore the arrival of colonizers, a region comprising only about 3% of the Amazon basin's rainforest area may have supported complex civilizations with a population of up to 3 million people.61% similar

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