The Mexican-American War, one of many controversial wars in the history of the United States. In a debate over where the Mexican-American border was and ownership of none other than Texas. A war like this is never talked about or heard about much compared to wars like the Civil War. The Mexican-American War could easily be one of the most important wars in the history of the United States. Thanks to the victory of this war the United States acquired most of the present-day west such as California, Arizona and Nevada, to name a few. Before going to war you must always ask yourself a question: is it justified? Which in this case yes. The United States was justified in going to war with Mexico because, they invited us, it would happen anyway, and they started it. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay One of the reasons the United States was justified in going to war with Mexico is that they invited us to come. After Mexico gained independence from Spain, they began calling on American farmers to help prevent border violations and protect them from Native Americans. Mexico eventually offered land grants that attracted more and more settlers who wanted cheap land, all for the low cost of obeying Mexican laws and recognizing Roman Catholicism. Fast forward a couple of years later and find that there were more Americans than Mexicans living in the area of ​​modern-day Texas. Now, I understand that technically it's still Mexican land, but we offered to buy Texas, TWICE. After refusing to sell, Mexico closed its borders and imposed a heavy tax on American goods. Heavy taxes equal angry Americans or people for that matter. Mexico thought it could pose an obstacle against the expanding United States when in reality it missed the opportunity to be a strong ally with an even stronger nation. Another reason America was justified in going to war with Mexico was that it was going to happen anyway. Gotta love 1840s America, Manifest Destiny, take what you want and move as far west as you can. John L. O'Sullivan writes “All this (will happen) in the natural flow of events…” (Doc A). When he says this he is referring to Manifest Destiny, or the belief that the United States could continue to conquer all the land west of the Mississippi because “God wills it.” In the document O'Sullivan talks about how everyone should accept that Texas is part of the United States and how not only will Mexico lose Texas but California as well. “The Anglo-Saxon foot is already on the borders (of California)” (Doc A). Then he mocks the Mexican government by calling them "Imbeciles". Honestly, O'Sullivan is right, he recognizes what the United States is like, he knows the pattern and he saw it clearly before with Andrew Jackson rejecting the Native Americans. He sees Mexico only as an obstacle to the United States, basically like the Native Americans. My final reason why the United States was justified in going to war with Mexico was that they started it. As childish as it sounds, it's true. Mexican soldiers killed American soldiers, Polk confirms this by saying: “Mexico has crossed the border of the United States, invaded our territory and shed American blood on American soil” (Doc B). Given that there was no separate border agreement between Mexico and the United States, Mexico was the aggressor and issued a call to kill innocent men. When Polk presented his speech at the.