Robert La Salle, if u want to remember who explored it, you can use this tip: Salle (Robert's last name) sounds like sally (in a way) so u can say, Sally went to the Valley, and you'll remember it :)
Nothing. There are spots that you can use to ford the river, but I don't think he crossed it.
We use the Mississippi River for shipping.
It was the use of the Mississippi River and the Port of New Orleans
Transportation.
fish, boat, swim.
ok so they use it for water
south
They would have used either the Colorado,Columbia,Mississippi,or the Ohio river.
the Mississippi River
The Missouri River.
The Ohio river is a major tributary of the Mississippi.