Mexican American War Dbq

The Mexican American War
The people of the United States have one duty, that is to protect. In 1821, Mexico declared its independence from Spain, its mother country. Mexicans wanted a larger population, and in 1845, the annexation of Texas happened, meaning Texas was now a part of the United States. The annexation angered Mexico so, in 1846, the Mexican American War began. Was the United States morally right in going to war with Mexico? Morally right suggests that the United States was justified in declaring war on Mexico. The United States was justified in going to war with Mexico because of Manifest Destiny, the annexation of Texas, and the benefits of the economy.
First off, The United States was justified in going to war with Mexico by the plan that God had created for the Americans. John O’Sullivan, being the first person to use Manifest Destiny has written that other countries, including Mexico, are disagreeing with the fact that we

The whites already are set on the Mexicans border. The United States is armed with farmers, and the rifle for defense, and is leaving behind a trail of schools, colleges, courts, and mills and meeting houses. (Document A). The benefits of the economy help develop the idea that the United States was justified in going to war with Mexico because by creating more and more benefits for the government on the Mexicans border, proved that the United States was strong enough to fight against Mexico. Mexico might justly charge citizens with disgraceful robbery while seeking expansion of slavery, though the citizens denied. (Document D). Seeking expansion of slavery suggests that the United States was justified in going to war with Mexico because Texas would become a slave state, which is an economic benefit because it would increase the rate of the growth of crops and goods in the area, or how to start a new life beyond