What two laws passed by congress dealt with the issue of the western lands?

What two things are being compared in this epic simile (the odysseus)

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.

Discuss the main ideas of eugenics, and explain why it is no longer a prominent belief in the united states.