Please show the movements to the following questions (11-14) using a Supply-Demand graph, and then justify your answers as well:

11. A. Increases in productivity due to changes in technological capacity

B. Assume tobacco is a normal good; Incomes of New Englanders increase

C. Tobacco prices fell dramatically in the early 1600s in spite of demand increases

12. The U.S. terminated its role in the slave trade in the early 1800s. What is the best assessment of what would have happened had the U.S. not ended the slave trade?

13. What would be the impact of a virus that infected the Midwestern corn crop?

14. Describe the impact of the cotton gin.

15. For the following scenarios; 1) Please tell us if this activity produces any externalities,

2) Is the externality positive, negative, or both.

a. an iron smelting factory emits sulfur dioxide into the air

b. the owner of a steamboat company dredges a river in order to improve navigation

c. a group of investors starts a business specializing in transporting goods via clipper ship

d. flatboat operators purchase steamboat tickets in order to return to their homes upstream