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History Research Guide - The Mexican-American War: Possible Topics

A research guide to help you find resources on the Mexican-American War.

Manifest Destiny

Manifest Destiny - John Gast, 1872
Manifest Destiny painted by John Gast, 1872

Possible Topics

Here are some topic ideas to get you started when writing your paper.

Some historians claim that the Mexican-American War started because of the American idea of Manifest Destiny. How did Manifest Destiny play a part in the war?

Along with the annexation of Texas, the Mexican-American War has clearly changed politics between the United States and Mexico. How has the relation between these two countries been affected by the Mexican-American War?

Even though the Mexicans fired the first shot, it can be argued that America actually started the war. What do you think?

 The Monroe Doctrine, introduced in 1823, was used by President Polk during the Mexican-American War to discourage foreign influence in the war. How was the Monroe Doctrine used in the war? How was the document used before the war? Was the Monroe Doctrine effective or not?