Since we can't see the map that you were given in your homework, the best we can do is suggest that it's likely the one on, or next to an arrow pointing to, the Mississippi river. This shouldn't be hard to find given that it's one of the largest rivers in the world.
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Minnesota, Missouri and Mississippi border the Mississippi River. They begin with the letter M.
Iowa is the only state bordering the west bank of the Mississippi River beginning with the letter I. Illinois borders the east bank of the Mississippi River.
Both the river and the US state names are spelled Mississippi.*One way to be sure that you have spelled it correctly is that you can see the four-letter combinations ISSI, ISSI, and IPPI in the correct form.
That would be the Ohio river, if my geography serves me correctly.
The Mississippi River
I think it is the Mississippi River but not for sure
The Mississippi River forms the boundary between Illinois and Missorui
Mississippi River. :)
the Mississippi river
The Mississippi River is the boundary between Tennessee and Arkansas.
I think it is the mississippi River :)
The Saint Croix and Mississippi Rivers form part of the boundary between Wisconsin and Minnesota.