I need help please:(

What happened to holocaust children after they were liberated ?

Which of these resulted in an actual slow down or limiting of the u.s. and soviet nuclear arsenals?

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.