Join us as we navigate white waters, slog through rainy winters, trudge over mountains, see the Pacific — and then do it all over again on the way back. Take this quiz to test how well you know Lewis, Clark and the whole crew.
It was Jefferson who wanted to explore and expand into the West.
Meriwether's a really terrific name.
It's William Clark. Seems basic, but it's easy to forget they have first names.
Lewis spent most of his life in Virginia.
Lewis took the post of Jefferson's secretary in 1801.
While Clark was born in Virginia, he spent a lot of his early years in Kentucky.
Two thousand five hundred dollars isn't a huge sum, even for the time.
Lewis knew Clark from their military days, and they remained friends.
The crew didn't know Clark was technically reporting to Lewis.
The crew left from Missouri in 1804.
Its nickname was "Corps of Discovery." Although they might have referred to themselves as friendship hikers, too.
While there were folks that joined for parts of the trip, 33 people made the journey from North Dakota to the Pacific and back.
Lewis' Newfoundland, Seaman, made the whole trip.
The 8,000-mile journey was no small walk in the woods.
It took two years, four months and 10 days for the round trip from Missouri.
Lewis was charged with collecting and recording the new flora and fauna that the corps came across.
Clark mapped the trip.
York (who has only been referred to with one name in journals of the time) was Clark's slave from childhood.
While venereal diseases, insect-borne illnesses and dysentery were epidemic on the trip, only one man died of a suspected burst appendix.
The company camped at Fort Mandan, North Dakota.
Sacagawea spoke the Shoshone language, so they agreed to take her along with her French Canadian fur trapper husband.
The crew departed in April. That is a no-joke working mom.
Clark really took a shine to the kiddo and called him Pomp to tease his "little dancing boy" activities.
Because she was familiar with the area, she could give pointers about the company's locations.
The difficult mountains would have been nearly impossible to pass without a guide who knew where to take them.
The Clearwater and Snake rivers led them to the mighty Columbia, which took them to the Pacific.
He wrote, "O! The joy!" They made it to the Pacific in November, which is not the most pleasant time in the Pacific Northwest.
Everyone got a vote except the dog (and probably little Pomp).
The return trip was much shorter, with groups splitting up to explore but rejoining each other at the Missouri River.
It cost $38,000. Probably a pretty good deal, all in all.