What was the approximate total land area of British colonies in 1913?

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.

How did chris mccandless feel before and after going into the wild? i need with a compare and contrast slide for a project

Which of these constitutional amendments made all people born or naturalized in the united states into citizens of the united states ?