why might location have been important to the power and wealth of the mississippian culture?

Anytime you have water in an area you have activity and commerce. The Mississippi River was/is a crucial part of that culture. Water grows crops, crops provide income for a community, water also provides transportation, hygeine and other things. Early, North American villages were concentrated around water or near water that includes those within what was to become the United States, particularly in the eastern part of the U.S.

uuuuuuuuuuuuuuuuuuuuuuuuh because river good