I’m pretty sure the answer is James Meredith hope that helped <3
Many Haitians left the country to escape abuses and poor economic conditions.
For Native Americans at the time, it would have been next to impossible to understand something like the Treaty of Tordesillas. This treaty intended to partition tracts of land that the Europeans did not even know whether they existed, an action that may have looked like sheer madness and even dishonorable, for the Europeans claimed possession of lands they had not conquered by the force of their arms.Maybe, after some thought and analysis, Native Americans would have felt outraged as a man living in such a distant place, the Pope in Rome, who had no authority whatsoever for them, made the decision of handing over lands, people,wealth, etc, to two different groups of Europeans. Perhaps, other Native Americans, once they managed to understand that agreement so odd to them, might have found it laughable and it might have prompted them to challenge to take what was their own over their dead bodies.
I don’t know if this will help you But here is what I got about the Mexican American War.
The Mexican-American War (1846-1848) marked the first U.S. armed conflict chiefly fought on foreign soil. It pitted a politically divided and militarily unprepared Mexico against the expansionist-minded administration of U.S. President James K. Polk, who believed the United States had a “manifest destiny” to spread across the continent to the Pacific Ocean. A border skirmish along the Rio Grande started off the fighting and was followed by a series of U.S. victories. When the dust cleared, Mexico had lost about one-third of its territory, including nearly all of present-day California, Utah, Nevada, Arizona and New Mexico.