What are the two major mountain chains that border the great mid-continentak basin drained by the Mississippi river system

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Hi, shaina12!

Your type of question has come up previously on this site. It's also addressed a number of times on the Internet.

Please click on the following search.

Mountain Chains Mississippi River Mid-continental Basin - Google Search (http://www.google.com/search?hl=en&safe=off&ei=Ou6tSuKIBYfaNv_pxPIN&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=Mountain+Chains+Mississippi+River+Mid-continental+Basin&spell=1)

Thanks!