Which domestic shift most affected the demographic makeup of northern us cities in the early 1960s

It’s in apex and it’s due in 30 minutes

What was martin luther king, jr., referencing in the passage that brought him to lead a protest in birmingham?

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.