6. Which is the BEST explanation of why Native Americans built structures like
the mounds at Cahokia?

a. They served a religious purpose
since they were used as burial
tombs.

b. They served a military purpose
as they were used as defensive
fortifications

c. They served a political purpose
since they were used for tribal
council meetings.

d. They served an economic
purpose as they were the
location of the tribal
marketplace.