Why did hannah johnson write to president lincoln?

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.

The articles of confederation allowed congress to: make and borrow money. declare war. create a postal service. all of these choices are correct.

What was going on with south asia before europeans came ?