1.- They wanted the American people to believe that it was their right or their destiny to inhabit the Mexican territory
2.- The people who opposed believed that the South was more worth expanding, and those who supported it believed that those lands belonged to them.
3.- It was common people, some writers that opposed the war with their words.
4.- Some people protested against the war, but with it was useless.
5.- Zinn used evidence of some of the articles of newspapers written during the time of the war.
