the institute of the christian religion
The Supreme Court struck down part of the Judiciary Act of 1789 as unconstitutional
Answer: The U.S. Army had superior weaponry in their battles in Mexican territory.) ... How did the Mexican-American War lead to greater sectionalism within the United States government? There was great tension between pro-slavery and anti-slavery representatives over how new territories won would handle the issue of slavery.
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Answer: I know you said list 3 reasons but here is 4 :)
Explanation: 1 Disease.
2 Guns and Horses.
3 The capture of Atahualpa.
4 Internal Problems.