In economics, the demand curve is the graph depicting the relationship between the price of a certain commodity and the amount of it that consumers are willing and able to purchase at that given price. It is a graphic representation of a demand schedule.
Abraham Lincoln did not get rid of slaves. We technically have slaves instead we pay people to do our work.
He also did not modernize the economy he just made the government produce more of it.
Im not so sure thats all right but i tried it.