Was The Mexican War Justified Dbq Essay

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Many people do not know that the Mexican War had increased the United States by 50%. The Mexican War started in 1846 and ended in 1848 and took place mostly south of the Rio Grande. What forced Mexico to declare war was the annexation of Texas, the citizens in Texas disobeying the Mexican laws, and Americans crossing the border. Do you think the United States had enough justification for going to war with Mexico? The United States was justified in going to war with Mexico because the United States’ Manifest Destiny beliefs, the Mexicans passed the border of Rio Grande, and the American citizens supported going to war.

One reason the Mexican War was justified was the United States Manifest Destiny beliefs. Evidence supporting this reason is that, according to Document A, John O'Sullivan said it was God’s choice if the United States will grow by taking or buying territory. Also, the annexation of Texas helped grow the United States which gave the …show more content…

Evidence supporting this reason is that, in Document B, President Polk says he ordered an army to take position at Rio Grande because their was a threat from Mexico. In addition, the Mexicans passed the border where the United States thought the border was. This evidence shows the US was justified in going to war with Mexico because the Mexicans passed the border which shows that they are posing a threat. A third reason the Mexican War was justified was Americans supported going to war. Evidence of this claim is in Document D where Charles Sumner said, at the time, citizens had already started to move to Texas from Massachusetts. Also, in Document B, the note following the letter says that Congress, over killingly, voted 214 votes for “yes” and 16 votes for “no”. This evidence shows the US was justified in going to war with Mexico because it shows support from American citizens and the American

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