US History › Section F · Westward expansion and the cotton South › Topic F.4
The Mexican-American War
In just over two years, from 1846 to 1848, the United States fought Mexico and took about half of its territory. The war fulfilled expansionists' dreams of a nation stretching to the Pacific, and it immediately raised the question that would tear that nation apart: would the new lands allow slavery?
In this topic
- Manifest destiny
- Polk, Texas and Oregon
- The road to war
- Worked example: the disputed strip
- Worked example: Polk and Lincoln
- The fighting
- Opposition and costs
- The Treaty of Guadalupe Hidalgo
- The California Gold Rush
- Common mistakes to avoid
- Key takeaways
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