The Lewis and Clark Expedition, as understood within the context of Advanced Placement United States History, refers to a significant exploration of the American West, commissioned by President Thomas Jefferson shortly after the Louisiana Purchase of 1803. It was a U.S. military expedition, led by Meriwether Lewis and William Clark, that spanned from 1804 to 1806. The primary objective was to chart the newly acquired territory, establish American presence, and find a practical route across the Western half of the continent.
This undertaking is important in understanding the expansion of the United States and its subsequent interactions with Native American populations. The expedition provided valuable scientific and geographical data, solidifying American claims to the Oregon Territory and fostering westward migration. The collected information included details on flora, fauna, and the lifestyles of various indigenous tribes encountered along the Missouri River and beyond. Furthermore, it contributed to the growth of the American fur trade and laid the groundwork for future territorial disputes and negotiations.
