Final answer:
The statement that is NOT true about the early civilizations of Pacific South America is that the Aztecs ruled a huge area through warfare and a system of tribute.
Step-by-step explanation:
The statement that is NOT true about the early civilizations of Pacific South America is that the Aztecs ruled a huge area through warfare and a system of tribute. The Aztecs actually ruled Mesoamerica, which is located in what is now Mexico, not Pacific South America. The Inca empire, on the other hand, was located in Pacific South America, specifically in the Andes region of South America.