Ancestral puebloans lived in small communities. mississippians built huge cities. both cultures: declined after encountering europeans. isolated themselves from other societies. grew corn to feed their people. built large mounds that may have been used for ceremonies.

The correct answers are A) Declined after encountering Europeans

and C) Grew corn to feed their people

Explanation:

Both the Mississippians and the Puebloans were Native American tribes. However, they had very different customs, traditions and way of life. The biggest difference was in the way they lived and practiced religion.

However, both these cultures depended on the native Maize crop for sustenance and both suffered declines as they became exposed to European colonizers.

it would be c because Lewis was a chairman for that organization.