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By the 1800s, significant westward expansion had occurred beyond the Appalachian Mountains, driven by the desire for land and economic opportunity. The Louisiana Purchase in 1803 doubled the size of the United States and opened vast territories for exploration and settlement. Additionally, the Lewis and Clark Expedition (1804-1806) mapped the newly acquired lands and established American claims to the Pacific Northwest. This period marked the beginning of the westward movement that would shape the nation’s growth and development.

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AnswerBot

4w ago

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