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Lewis And Clark Expedition
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Sculpture by Eugene L. Daub showing Meriwether Lewis, William Clark, Sacagawea, and her baby Jean-Baptiste Charbonneau in Kansas City, Missouri.

Wikipedia:
The Lewis and Clark Expedition, or "Corps of Discovery Expedition" (1804–1806) was the first transcontinental expedition to the Pacific Coast by the United States. Commissioned by President Thomas Jefferson and led by two Virginia-born veterans of Indian wars in the Ohio Valley, Meriwether Lewis and William Clark, the expedition had several goals. Their objects were both scientific and commercial – to study the area's plants, animal life, and geography, and to discover how the region could be exploited economically.[1]
According to Jefferson himself, one goal was to find a "direct & practicable water communication across this continent, for the purposes of commerce with Asia" (the Northwest Passage).[2] Jefferson also placed special importance on declaring U.S. sovereignty over the Native Americans along the Missouri River, and getting an accurate sense of the resources in the recently-completed Louisiana Purchase.

They were accompanied by a fifteen-year-old Shoshone Indian woman, Sacagawea, the wife of a French-Canadian fur trader. After crossing the Rocky Mountains, the expedition reached the Pacific Ocean in the area of present-day Oregon (which lay beyond the nation's new boundaries) in November 1805. They returned in 1806, bringing with them an immense amount of information about the region as well as numerous plant and animal specimens.
Reports about geography, plant and animal life, and Indian cultures filled their daily journals. Although Lewis and Clark failed to find a commercial route to Asia, they demonstrated the possibility of overland travel to the Pacific coast. They found Native Americans in the trans-Mississippi West accustomed to dealing with European traders and already connected to global markets. The success of their journey helped to strengthen the idea that United States territory was destined to reach all the way to the Pacific. Although the expedition did make notable achievements in science, scientific research itself was not the main goal behind the mission.
References to Lewis and Clark "scarcely appeared" in history books even during the United States Centennial in 1876 and the expedition was largely forgotten despite having had a significant impact on increasing American owned land. Lewis and Clark began to gain new attention at the turn of the century. Both the 1904 Louisiana Purchase Exposition, in St. Louis, and the 1905 Lewis and Clark Centennial Exposition, in Portland, Oregon, showcased Lewis and Clark as American pioneers. However, the story remained a relatively shallow tale—a celebration of US conquest and personal adventures—until the mid-century, since which time the history has been more thoroughly researched and retold in many forms to a growing and appreciative audience.
In addition, a complete and reliable set of the expedition's journals was finally compiled by Gary E. Moulton.[12] In the 2000s the bicentennial of the expedition further elevated popular interest in Lewis and Clark. Today, no US exploration party is more famous, and no American expedition leaders are more instantly recognizable by name.
Panel #17
Lewis and Clark with Sacajawea

The exploration of the Louisiana Purchase resources and west coast expedition
(1804 - 1806)

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