What was the name given to the series of laws that close boston harbor

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.

Mississippi, florida, alabama, georgia, louisiana, and texas all seceded from the union. true or false ?

What made it difficult for mexican americans to win court cases against anglo americans who laid claim to their land