Moundville Archaeological Site
The culture was expressed in villages and chiefdoms throughout the central Mississippi River Valley , the lower Ohio River Valley , and most of the Mid-South area , including Kentucky , Tennessee , Alabama , and Mississippi as the core of the classic Mississippian culture area . 
<triplet> Ohio River <subj> Mississippi River <obj> mouth of the watercourse <triplet> Kentucky <subj> Mississippi River <obj> located in or next to body of water <subj> Ohio River <obj> located in or next to body of water <triplet> Mississippi <subj> Mississippi River <obj> located in or next to body of water