| http://www.w3.org/ns/prov#value | - The river continued to be of enormous importance to explorers and naturalists, among them Charles Darwin and Louis Agassiz.There is archaeological evidence of clustered, densely populated pre-Colombian settlements in parts of the Amazon basin, but at the time of the early European explorations these settlements had already been wiped out, probably by smallpox and other diseases, The valley was lar
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