if memory serves me, it was a border dispute with Mexico over the Texas territory. The Mexicans attacked an American patrol and that was the start of the conflict. But also idk and I could be wrong.
Niccolo Machiavelli
Machiavelli was a diplomat in Florence who tried to answer how could a ruler guarantee that he would stay in power by writing The Prince in 1513. Machiavelli claimed that people were greedy and self-centered. He argued that rulers should not be good, and that rulers should do whatever is necessary to keep power and protect their city, including killing and lying. Today, when someone is called a Machiavellian, it means that they are acting tricky and not thinking about the good.
I believe the reason is because the native americans did not convert to Christianity or they destroyed their properties because they wanted the natives to join the union
