The map of Mississippian Indian settlement is most likely displaying which cultural phenomena prior to European contact?

I think it is C but im not really sure though

The correct answer is c i promise

so are you answering the questions of other people right now also? :)

Yes.

and the coices are........

I can't tell until you post your choices.

A)

the official end of nomadic herding
B)
the establishment of long houses along primary rivers
C)
the creation of earthen mounds, known as earthwork mounds
D)
the location of several water sources required for survival

i posted them

I don't know if im wrong or not

I disagree. A map usually doesn't cover three of your choices.

http://www.nashville-vacation-fun.com/images/MisssissippianMap.jpg