The Mexican-American War

The Mexican American War was a very controversial event. The Americans believed in their “Manifest Destiny” which prompted them to annex the territory of Texas which, in turn, initiated the war on April 25, 1846. Texas was annexed to the Union as a slave state on December 29, 1845. This upset all of the Free states along with the Mexicans but the Southerners were in favor of the war because it gave them more strength when fighting for slavery. While there were many different beliefs about the Mexican-American War throughout the United States, these beliefs generally were the same within a region.

Manifest Destiny represented a God given right to expand West, justifying any action to accomplish the sacred duty. However, such a grand quest could not have been left unscathed and the Mexican-American War was the inevitable action that left a mark on the Manifest Destiny of being motivated by nothing more than greed and extreme nationalism. The inevitability of the war and the claimed “injustices” that were done toward Mexico were justified because of the annexation of Texas, there was a legitimate national threat and the war being a last resort.

The Manifest Destiny beliefs clearly explained how Texas annexation was a natural expansion of the United States-a logical sequel to the Louisiana Purchase. Controversy arose from the annexation of a huge section of Mexico and the fears these lands meant the expansion of slavery. John Quincy Adams, a member of the House of Representatives, stated, "We hesitate not to say that annexation of Texas, effected by any act or proceeding of the Federal Government, or any of its departments, would be identical with dissolution. It would be a violation of our national compact, its objects, designs, and the great elementary principles with entered into its formation, of a character so deep and fundamental, and would be an attempt to authorize an institution and a power of a nature so unjust in themselves, so injurious to the interests and abhorrent to the feelings of the people of the Free States, as, in our opinion, not only inevitably to result in a dissolution of the Union, but fully to justify it; and we not only assert that the people of the Free States 'ought not to submit to it,' but

The United States became further united due to the continuous desire and procurement of new territories. In President James Polk’s 1845 Inaugural Address, he shared his opinion of the “danger to [the nation’s] safety and future peace” if Texas remained an independent

“The United States had emerged as a modern capitalist nation, and the spirit of nationalism in the country was strong and growing” (Henderson 71). As tensions grew between the Unites States and Mexico, there was a thirst for war. The Unites States declared war with Mexico, because they owned land that Americans desired, resulting in America’s fulfillment of achieving their philosophy of “Manifest Destiny”. The blood boil of both countries caused a lot of bloodshed. The dispute lasted for a long two year battle which was for huge amounts of land. The Americans were victorious and claimed new territories from the conflict.

The author’s purpose was to highlight the territories of California, Oregon and Texas with the intention to promote Manifest Destiny and westward expansion in a published Whig journal. Whigs promoted rapid economic and industrial growth, including the expansion of territories through Manifest Destiny, by demanding government support for a more modern, market-oriented economy, suggesting high tariffs, and funding internal improvements. The term Manifest Destiny was coined by John O’Sullivan, the editor of the 1846 Democratic Review. He claimed in his article that California will “fall away from Mexico…and a population will soon be in actual occupation of [it].” In stating this, he was foreshadowing the end of the war and the forced Mexican cession of the territories of California and New Mexico to the United States in exchange of $15 million.

The southern desire to expand slavery was a major cause of the Mexican-American War, but there were other causes as well. The war started on April 25, 1846, and ended on February 2, 1848, with the signing of the Treaty of Guadalupe Hidalgo. In that treaty, Mexico ceded Texas with the Rio Grande boundary, New Mexico, and California to the United States. The desire to expand slavery in the south was perhaps the largest cause of the Mexican-American War, because southerners were in favor of Manifest Destiny and believed that the expansion of slavery was necessary to keep the slave trade alive in the U.S. Internal political conflicts were another cause of the Mexican-American War. Also, the fear that Texas could be claimed by Britain or France or that it would be uncontrollable if independent was another cause of the war. The

The annexation of Texas was a path that many Texans wanted. Nearly ninety percent of Texans wanted to become part of the United States. “People hadn’t come to Texas to become part of the British Empire; most were particularly incensed by the British insistence on emancipation of the slaves; responding to public sentiment, the Texas Senate demanded that President Houston give them a full accounting of his dealings with Great Britain”. Before annexation, The Republic of Texas was a sovereign nation that existed for nearly ten years. The annexation process was proposed by John Tyler. Unfortunately, President Martin Van Buren struck down the annexation of Texas out of fear that this would expand slave territory and ensue war with Mexico. The Treaty of Annexation, Treaty of Guadalupe-Hidalgo, Mexican-American War and Joint Resolution of Congress all impacted the annexation process.

As Texans began demanding freedom, they deciding to away from Mexico, causing tensions between the United States and Mexico. In 1845, tensions began to lead to threats between the two countries when the United States decided to annex Texas into their country and ultimately led to the Mexican-American war. The U.S. was not justified in going to war with Mexico. A reason is that James K. Polk, president at the time, decided to send American soldiers onto disputed territory which Mexico thought was theirs. Doc C is an article written by Jesus Velasco-Marquez discussing the Mexicans viewpoint on the war with the United States in 1846. According to Doc C,¨In the eyes of the Mexican government, the mobilization of the US army was an outright attack

By the time James Polk became president in 1845, an idea called Manifest Destiny had taken root among the American people. The belief that the U.S. had a God-given right to occupy and expand gained favor as more Americans settled to the west. Manifest Destiny was

Following the ratification of the treaty, some politicians felt the manifest destiny of the United States was to annex all of Mexico. The territory gains between 1845 and 1848 were enough to satisfy all but the most zealous advocates of manifest destiny. John O'Sullivan criticized the opponents of Texas annexation. He went beyond the immediate issue of Texas to argue that it is the fate of America to grow to encompass much, if not all of the North American continent. O'Sullivan is credited with inventing the term "manifest destiny" to describe his expansionist views for America. This phrase was coined in a New York Morning News editorial. (Wexler,153).

Slavery, in itself, was the most predominant reason for the breakup of the Union. It fundamentally divided the Free northern states and the Slave southern states, causing immediate tension. However, it was the various conflicts resultant of the central issue of slavery that truly plunged the Union into Civil War. The foremost of these tensions dealt with new territories, particularly those gained in the Mexican cession. The Mexican War was the direct result of “Manifest Destiny,” or the belief that the United States was ordained by God to control North America from coast to coast, which was introduced by the article used in Document 1. This article by John L. O’Sullivan was written to encourage the “reception of Texas...for the free

He decided to make Texas on the plan of annexation, due to this decision the Mexican was not

The issue of Texas being annexed, seems to weigh heavily on his mind and in the selected writing, he is saying he won’t forgive himself if he does not speak out against the impending peril he believes would come if this would be “green lighted.” He firmly expresses his belief that to change the status of Texas would set a series of unstoppable and inevitable events in motion, that we would all regret. He denounces the feverish pace with which growth seems to be happening, and reminds us that more care and deliberation ought to take place. He warns that this quick, rash movement would only invite upon us, new invasions and violent

The war with Mexico is long remembered as an episode, and by no means is it an unimportant one. With the events that led up to its happening, from the Manifest Destiny to the disputes on territory, it has severely marked the United States. American historians regard the Mexican-American war as “the foulest blot on our national honor”. (sfmuseum.org) Unethical actions were taken gain Mexican territory. Polk and his hunger for land drove him to find some devious way to fight a war with Mexico. His belligerent attitude in regard to this war was the “foulest blot on our national honor.” However, as one studies the events that led to it, was it an unprovoked act of aggression? Or did the US unjustifiably lure Mexico into one of the bloodiest wars on American soil?