How do paragraphs 6-7 contribute to the development of ideas in the text

c) the invasion of the shang

answer; /// the correct answer is evidence of the olmec civilization has been found in southern american in a hot steamy forest, archaeologists have found earthen artifacts at several sites that were evidence of the olmec civilization. these   artifacts were mounds,courtyards and pyramids build of stones, also on top of the mounds were many monuments made of stone, some of these stone structures are very large, they weigh as much as 44

no one really purchased it themselves, it was all america, they had debates etc.

the answer is b.india