They sailed up the Columbia River from the Pacific Ocean to the interior of Oregon, but, they had to walk over the Rocky Mountains by foot. There is no river that goes from the Pacific Ocean to the Missouri/Mississippi river. They did not take a boat from Oregon down the Pacific side of the Americas and back to Washington DC. (around the southern tip of South America).
Missouri.
Plese answer
Long time no sea.
They returned on September 23, 1806.
she traveled with Lewis and clark
they went back on the specific ocean
3years after starting the expedition
Louis and Clark took the same route and were one group not separate groups.
The Lewis and Clark expedition return trip had to be timed perfectly so that the Missouri River would be free of ice. If they waited too long to began the return journey, they would have to endure another harsh winter on the Plains.
Pike was the leader of one group that was sent out to explore the west. Lewis and Clark were the leader of the other group. In the end they return but Pike was not and much as a hero like Lewis and Clark. They just wanted to please Jefferson.
Lewis and Clark were looking for the Northwest Passage to the sea. They also were tasked with mapping the unexplored territory.
Louis and Clark took the same route and were one group not separate groups.