Help me I need it. Pls

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.

Plz i need this answer t-t in a couple of paragraphs, list two reasons why florence is the birthplace of the renaissance. explain how these reasons contributed to the renaissance

After the 9/11 attacks, the united states launched a military offensive against the taliban government in a) iraq b) egypt c) afghanistan d) kuwait