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Formation
The Amazon once flowed west as part of a Proto-Amazon-Congo river system, from the interior of present-day Africa when the continents were joined as western Gondwanaland. The Amazon River started to form over 2000 million years ago. This formation occurred due to the highlands which were formed on Gondwanaland. When the collision of the South American-Plate and the Nazca-Plate occurred, 15 million years ago, it formed the Andes Mountain Range. The Range blocked the mouth of the large lake which tilted the continent and allowing the lake to burst, which formed the Amazon River Basin and then the Amazon River. |