Archaeological Remains
Brazilian natives, unlike those in Mesoamerica and the western Andes, did not keep written records or erect stone monuments, and the humid climate and acidic soil have destroyed almost all traces of their material culture, including wood and bones. Therefore, what is known about the region's history before 1500 has been inferred and reconstructed from small-scale archaeological evidence, such as pottery and stone arrowheads.
The most conspicuous remains of these societies are very large mounds of discarded shellfish (sambaquis) found in some coastal sites which were continuously inhabited for over 5,000 years; and the substantial "black earth" (terra preta) deposits in several places along the Amazon, which are believed to be ancient garbage dumps (middens). Recent excavations of such deposits in the middle and upper course of the Amazon have uncovered remains of some very large settlements, containing tens of thousands of homes, indicating a complex social and economical structure.
Read more about this topic: Indigenous Peoples In Brazil
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