Manifest Destiny, or land stealing? The war against mexico and the us, which took place north of the Rio Grande, broke out May 1846. The land north of the Rio Grande was disputed by the US and Mexico. Because the United States decided to occupy disputed territory Mexico attacked. With that said, is the United States justified in declaring war against Mexico? The United States was not justified in going to war because they deprived Mexico from their land, occupying territory in dispute and it was mexico's territory.
The united states deprived the people of mexico of the land that was rightfully theirs. According to document c it states that the Mexican referred to the was as the United States invasion. A quote from “El