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Amazonian archaeology has made major advances in recent decades, particularly in understanding coupled human environmental systems. Like other tropical forest regions, prehistoric social formations were long portrayed as small-scale, dispersed communities that differed littie in organization from recent indigenous societies and had negligible impacts on the essentially pristine forest. Archaeology documents substantial variation that, while showing similarities to other world regions, presents novel pathways of early foraging and domestication, semi-intensive resource management, and domesticated landscapes associated with diverse small and medium-sized complex societies. Late prehistoric regional polities were articulated in broad regional political economies, which collapsed in the aftermath of European contact. Field methods have also changed dramatically through in-depth local and regional studies, interdisciplinary approaches, and multiculrural collaborations, notably with indigenous peoples. Contemporary research highlights questions of scale, perspective, and agency including concerns for representation, public archaeology indigenous cultural heritage, and conservation of the region's remarkable cultural and ecological resources. [ABSTRACT FROM AUTHOR]

During the twentieth century, Amazonia was widely regarded as relatively pristine nature, little impacted by human history. This view remains popular despite mounting evidence of substantial human influence over millennial scales across the region. Here, we review the evidence of an anthropogenic Amazonia in response to claims of sparse populations across broad portions of the region. Amazonia was a major centre of crop domestication, with at least 83 native species containing populations domesticated to some degree. Plant domestication occurs in domesticated landscapes, including highly modified Amazonian dark earths (ADEs) associated with large settled populations and that may cover greater than 0.1% of the region. Populations and food production expanded rapidly within land management systems in the mid-Holocene, and complex societies expanded in resource-rich areas creating domesticated landscapes with profound impacts on local and regional ecology. ADE food production projections support estimates of at least eight million people in 1492. By this time, highly diverse regional systems had developed across Amazonia where subsistence resources were created with plant and landscape domestication, including earthworks. This review argues that the Amazonian anthrome was no less socio-culturally diverse or populous than other tropical forested areas of the world prior to European conquest. [ABSTRACT FROM AUTHOR]