Lesson 77 of 84 · Westward Expansion
⭐ 30 XPThe Mexican-American War
The Mexican-American War, which lasted from 1846 to 1848, was a key conflict stemming from the U.
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The Mexican-American War, which lasted from 1846 to 1848, was a key conflict stemming from the U.S. belief in Manifest Destiny—the idea that the United States was destined to expand across the North American continent. Tensions escalated over territorial disputes, particularly regarding Texas, which had gained independence from Mexico in 1836. The war resulted in significant U.S. territorial gains, including present-day California, Arizona, New Mexico, and parts of Colorado and Utah. However, it also heightened tensions over slavery in the newly acquired territories, contributing to the sectional conflicts that would eventually lead to the Civil War.
Key Facts
The Mexican-American War lasted from 1846 to 1848.
The war was driven by the belief in Manifest Destiny.
The U.S. acquired significant territories after the war, including California and New Mexico.
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1 of 2What idea motivated the United States during the Mexican-American War?
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