["HISTORY \/ United States \/ General","History\/United States - State & Local - South (AL,AR,FL,GA,KY,LA,MS,NC,SC,TN,VA,WV)","History: United States \/ State & Local \/ South (AL, AR, FL, GA, KY, LA, MS, NC, SC, TN, VA, WV)","Mississippi River;Economic aspects.","Mississippi River;Environmental aspects.","Mississippi River;History.","History \/ United States","GENERAL","HISTORY \/ United States \/ General","History","History \/ United States","History of the Americas","History\/American","History\/United States - State & Local - South (AL,AR,FL,GA,KY,LA,MS,NC,SC,TN,VA,WV)","History: United States","History: United States \/ State & Local \/ South (AL, AR, FL, GA, KY, LA, MS, NC, SC, TN, VA, WV)","Mississippi River;Economic aspects.","Mississippi River;Environmental aspects.","Mississippi River;History.","Non-Fiction","Scholarly\/Undergraduate","South (AL, AR, FL, GA, KY, LA, MS, NC, SC, TN, VA, WV)","State & Local","United States","United States - State & Local - South (AL,AR,FL,GA,KY,LA,MS,NC,SC,TN,VA,WV)","History of the Americas"]