Why was President Polk we need to go to war with Mexico

Not only was the U.S in a dispute with Mexico for years over Texas and wanted California (which was owned by mexico) so they could expand into the pacific, but Polk was a big believer in Manifest Destiny. This was an ideal held near and dear to Polk, which said the continent was for the U.S to conqueror. Getting back to it, the dispute boiled over when American troops were shot at and killed on American soil by a Mexican army. This spurred Polk on for the war he always wanted, and would defend Americas honor from Mexico.

social contract theory basically says that all individuals are born equal, and provided a god given right to consent to be governed. american government is based of this

thomas hobbes and john locke said that we are selfish, individualistic, and constantly at war with each other, therefore we need to be controlled. 

government is defined as the legitimate use of force to control human behavior within territorial boundaries, here comes in hobbes and locke.

hobbes takes the part about controlling human behavior. while locke takes the part of legitimate use of force, since force is not legitimate unless there is consent of the people. 

there are basically 3 goals of the government: 1) maintain order by protecting life and property. 2) providing public goods, those which are typically not provided by the public sector, such as roads and education. 3) promote equality be it political, opportunist or outcome equality. 

the 9th amendment

explanation: