Final answer:
The expansion of the population towards the west was significant in US History because it led to the concept of Manifest Destiny, offered new opportunities for settlers, and had a major impact on Native American tribes.
Step-by-step explanation:
The expansion of the population towards the west was significant in US History for several reasons. First, it led to the concept of Manifest Destiny, which was the belief that the United States was destined to expand across the continent. This belief influenced policies such as the Louisiana Purchase and the Mexican-American War.
Second, the westward expansion opened up new opportunities for settlers. It offered land ownership and economic possibilities, such as the California Gold Rush, which attracted people from all over the country.
Lastly, the westward expansion also had a major impact on Native American tribes who were forcibly removed from their ancestral lands and faced widespread displacement and death.
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