Meriwether Lewis- One of the Captains who led the expedition. Catalog all the plants and animals from the expedition. Worked in the military and also worked with Thomas Jefferson before he led the expedition.
William Clark- A Captain that helped lead the expedition. Drew maps of the new territory they traveled. Worked in the military with Lewis prior to leading the expedition.
Thomas Jefferson- The third President of the United States who was President at the time. He pushed for the expedition and helped get it approved by congress. He thought that if we could find a water route to the west and made a claim it would scare off some of the other countries trying to take the territory.
Sacagawea- A native American woman who helped with the journey. She helped out the men many times some including when she saved important journals that had gone overboard into the river, and by helping them getting horses from another indian tribe. She also worked as a translator for the corps.
Toussaint Charbonneau- A French-Canadian interpreter they met while camping in the winter during 1804. Joined the men on the journey bringing his wife Sacagawea along with him.
Along the expedition they discovered 178 plants and 122 animals. They discovered the Plains Gray Wolf, which is now endangered, the Prairie Apple plant, the Black-Tailed Prairie Dog, and the Pacific Blackberry plant.