The Columbia River.
the Columbus and Missouri rivers
The Columbia and Missouri rivers.
Missouri
The Missouri River
So that they can find out what is in that area and what inhabitants live there.
the Missouri River
the Missouri River
the Missouri River
Lewis and Clark followed the Missouri river.
They traveled the Missouri River.
the Missouri river , {they also explored the Columbus river and rocky mountains
No, Lewis and Clark followed the Missouri River for most of their journey, not the Mississippi River. They explored the western portion of the United States in search of a water route to the Pacific Ocean.
Lewis and Clark traveled on the Colorado River for their expedition.
Lewis and Clark explored Missouri River, and Columbia River.
After crossing the Rocky Mountains, the Lewis and Clark expedition followed the Columbia River to the Pacific Ocean. This river offered a route that allowed them to reach the coast of Oregon and complete their journey westward.
Lewis and Clark found the Missouri River.