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Unformatted text preview: The Lewis and Clark expedition. The Louisiana Purchase was then unknown; neither France nor Spain had mapped its rivers, mountains, or plains, and the important sources of the Mississippi and Missouri rivers and their tributaries were still a mystery. Jefferson quickly made plans for its exploration, appointing his secretary, Captain Meriwether Lewis, to head the expedition. Lewis asked his friend Lieutenant William Clark to serve as coleader. In the spring of 1804, the fifty-man Corps of Discovery left St. Louis, heading up the Missouri River. Although military men, Lewis and Clark had received crash courses in botany, zoology, and astronomy, enabling them to carefully collect plant and animal specimens and map the rivers. In addition, every literate man on the expedition was ordered to keep a diary. The expedition spent the first winter among the hospitable Mandan on the Upper Missouri a diary....
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- Fall '08
- Lewis And Clark