Ireally really need with this plz plz

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.

The irish and germans of the 1840's were part of the new immigration. true or false

How did the supreme court change as a result of ronald reagan's presidency? answers?