Describe two changes to social order in the late middle ages

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.

Under the new imperialism europe did not need large numbers of people to control territories because of

What did the us civil rights movement gain new momentum after world 2