Who developed the theory that food productions increases in arithmetic profession while human population increases in geometric progression? A. Edward Ullman
B. Ernest W Burgess
C. Chauncy Harris
D. Thomas Robert Malthus
E. Homer Hoyt

The correct answer is D, Thomas Robbert Malthus.

Which of the following was not a method used to keep african americans from voting after the civil war? a. white primaries b. literacy tests c. group imprisonment d. gerrymandering

Who was one of the greatest playwrights in the world , composing such classics ans macbeth, romeo and juliet, and henry v a. william shakespeare b. francis drake c. sir walter raleigh d. edmund spenser

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.