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In this video Heimler takes you through Unit 5 Topic 3 of the AP U.S. History curriculum which is set in period 5 (1844-1877).
It's time for the Mexican American War. This war was directly caused by the annexation of Texas which had gained its independence from Mexico in 1836. Additionally, with the election of James K. Polk and his platform infused with Manifest Destiny land acquisition, the conditions were ripe for war with Mexico.
The United States won the war handily, and with it came the Mexican Cession which included the new territories of California and New Mexico. Along with the Gadsden Purchase, Mexico handed more than 50% of its territory in the Treaty of Guadalupe Hidalgo.
The big question that loomed was this: would slavery be permitted in the new territories. During the war, David Wilmot proposed the Wilmot Proviso which said no. But it was struck down in the Senate. However, that little amendment was a sign of the growing fight to come over the slavery question.
If you have any questions, leave them below and Heimler shall answer forthwithly.
This video is aligned with the AP U.S. History Curriculum and Exam Description for Unit 5 Topic 3, and all the key concepts thereunto appertaining.
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