Answer:
Explanation:
Alright lemme throw down this knowledge , to make it simple the US president at the time believed in conquering land , and believed that god wanted him to do so. He took over a majority of mexico , such as California , Colorado , Nevada , Arizona , new mexico and more . which wad the treaty of Guadalupe hidalgo in 1848. even though the Mexican territory was theirs to begin with and was simply taken away because the Americans became accustomed to the land and wanted to be treated fairly and revolted which brought the idea to just conquer the land.
