Actually the Mississippi River forms most of the western border of Mississippi and ends in the Gulf of Mexico near New Orleans.
The question is not about the Mississippi River - it is about the Missouri River.
at its confluence with the mississpi
Missouri river
They traveled the Missouri River.
The Missouri River "starts" in the Rocky Mountains of western Montana. It flows through Montana, North Dakota, South Dakota, Nebraska, Iowa, Kansas and Missouri where it "ends" by flowing into the Mississippi River.
the Missouri river , {they also explored the Columbus river and rocky mountains
St. louise river
Missouri RiverMississippi River
Going out west, they originally took the missouri river. Towards the end, the took the Columbia river.
Missouri RiverMissouri River; Illinois River
It starts branching off from the Missouri River and then ends on the left side of the Rockies
Missouri (and Columbia)
NO. The Missouri river is the tributary