Help didn’t study please

How did the end of the mexican american war result in growing sectionalism in the united states?

What is the difference between the idea of stare decisis and something being constitutional?

In the introduction of becoming mexican american, sanchez draws from stuart hall's notion of cultural identity (pg. 12-13). hall asserts that identities are enmeshed in "becoming and of being." they are subjected to the elements and context of history. explain what you think he means by the idea of becoming and being and explain how context fits into comprehending the american concept of manifest destiny.