No surprise - early Spanish explorers reported cities of 100s of thousands - all of which were wiped out by the diseases of the explorers - death toll was estimated to be in the millions. All those ancient cities have returned to rain forest leaving only patches of terra preta to mark were they once existed.
I believe President Trump caused these fires by purposefully flying AF1 low over the rainforest with its afterburners blazing!!! Impeach now!