what helped the spread the belief in manifest destiny
The idea of Manifest Destiny changed the United States in a great way. Manifest Destiny was the belief that the United States needed to expand westward strethcing from Atlantic to Pacific Ocean. The idea of Manifest Destiny changed the United States in the way that it let Americans expand west.ecause of the Manifest Destiny, which is the belief that God gave the American people the right to expand their land, I believe that it changed the United States for better and for worse. It changed the country negatively because then there was controversy over slave and non-slave states.