How would you describe the revolutions for independence in latin america?

Which of the following is an example of the pull factor known as economic migration? a. better educational opportunities pulling people towards a new country b. mexican laborers entering the us to work in agricultural jobs c. joining family members that are already in a new country d. crop failures driving people away from their country i am unsure on this question, i was thinking b? but i could be wrong.

How did the united states ironically create a slaverybased market economy and democratic political system?

What championed nationalism and denounced nullification