What effects did migration, disease, and warfare have on American Indian populations after European contact?

Only people in ap world history can can someone give me a question and a statement to present to the class about chapter 15,16,or17

Why is the road most slick when it first begins to rain? a. oils the road has absorbed begin to float. b. the water has not had time to run off. c. a higher concentration of dirt makes the road more slick. d. none of the above

In a person dependent on a drug, occurs when the drug leaves his or her system quickly or for a prolonged period of time. a. addiction b. withdrawal c. independence d. relapse