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1000 BCE
Volcanic Activity breaks up Pangea/Gondwana
This was during the Jurassic Era, and some volcanic activity broke up the common theory of Pangea and Gondwana and started continental drift amongst land -
100 BCE
Techtonic plates under Pangea collide, creating Andes Mountains
After Pangea and Gondwana broke up, the techtonic plates started to collide, creating mountain ranges in the latter half of South America which soon were named the Andes. -
50 BCE
Sediment of the Andes drop into Amazon Rainforest
After the Andes were formed, the sediments leftover dropped into the tretches of the Amazon and created soil that was fertile to promote growth of flora and basic fauna.