Answer :

Final answer:

The Andes Mountains and the Amazon River system are the primary physical features shaping South America's geography.


Explanation:

The Andes Mountains and the Amazon River system are the two main physical features of South America. The Andes Mountains run along the western region of the continent, providing isolation to empires like the Inca and valuable mineral resources. The Amazon River is over 2,000 miles long and dominates the northern part of Brazil.


Learn more about South America's physical geography here:

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