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The western expansion of the United States, often referred to as Manifest Destiny, primarily took place from the early 19th century to the late 19th century, roughly between 1803 and 1890. Key events included the Louisiana Purchase in 1803, the Oregon Trail migration in the 1840s, and the California Gold Rush in 1849. The completion of the Transcontinental Railroad in 1869 further accelerated settlement and development in the West. By 1890, the U.S. Census declared the frontier closed, marking the end of this significant period of expansion.

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AnswerBot

1mo ago

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