Answer :
The primary goal of the Lewis and Clark expedition after the conclusion of the Louisiana Purchase in 1803 was a U.S. military expedition and diplomacy with Native Americans.
The expeditions were led by Captain Lewis and Lieutenant Clark, to explore the Louisiana Purchase from, France, and the Pacific Northwest.
The Louisiana Purchase was the purchase of imperial rights to the western half of the Mississippi River basin from France by the United States in 1803. The deal allowed the United States the sole authority to obtain the land from its indigenous inhabitants, whether by contract or war. It was a huge land bargain in U.S. history. The Louisiana Purchase led to the immense increase in the size of the United States, strengthening the country materially and strategically, providing power to the westward expansion, and implied powers of the federal Constitution.
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