What important thing did this piece of legislation accomplish

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.

Which statement describes the impact of the 21st amendment?

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