The Mexican War, also known as the Mexican-American War, was a conflict that took place between the United States and Mexico from 1846 to 1848. The main causes of the war were disputes over the border between Texas, which had recently been annexed by the United States, and Mexico, as well as the United States' desire to expand its territory.
There are differing opinions on whether the Mexican War was justified or not. Some argue that the war was justified because it was a necessary defense against Mexican aggression, while others argue that it was an unjust war of aggression and expansion by the United States.
One argument in favor of the war being justified is that it was a necessary defense against Mexican aggression. This view is based on the belief that Mexico had initiated hostilities against the United States by crossing the border into Texas and attacking American troops. According to this perspective, the United States had no choice but to defend itself against these attacks, and the war was therefore justified.
Another argument in favor of the war being justified is that it was necessary for the expansion of the United States. At the time, there was a belief in the United States that it was destined to expand westward and become a continental power. The acquisition of territory from Mexico, including California, was seen as a necessary step in this process.
However, there are also strong arguments against the war being justified. One argument is that the United States provoked the conflict by annexing Texas and then attacking Mexico, rather than being the victim of Mexican aggression. This view is supported by the fact that Mexico had long regarded Texas as an integral part of its territory and had protested the annexation.
Another argument against the war being justified is that it was an act of expansionism and imperialism by the United States, rather than a legitimate defense against aggression. This perspective is based on the belief that the United States was motivated more by a desire for territory and resources than by any legitimate security concerns.
Overall, it is clear that the Mexican War was a complex and controversial conflict, and there are valid arguments on both sides as to whether it was justified or not. While some may see it as a necessary defense against aggression, others view it as an unjust act of expansionism and imperialism. Ultimately, the question of whether the war was justified depends on one's perspective and interpretation of the events that took place.