Alcoa had a monopoly in the U.S. aluminum market from the late nineteenth century until the end of World War II. Which barrier to entry was the source of Alcoa's monopoly power?
a. Ownership of a vital resource.
b. Government franchises and licenses.
c. Patents and copyrights.
d. Economies of scale.
Question 2
Suppose that the price of telephones decreases. If more are purchased then:
a. the total utility of telephones will decrease.
b. the total utility of telephones will be unchanged.
c. the marginal utility of telephones will likely increase.
d. the marginal utility of telephones will likely decrease.
e. both a and d.
A set of tie stalls in an 18th century stable
A mother and her pups in a suburban yard in late May
The fossil record of chimpanzees is sparse. The femur from Kikongo, Uganda (c) may represent a late
Medicinal leeches on a patient’s neck. Today leeches are sometimes used in microsurgery to prevent b
An example of a late entry to the medical record.
A slave market in Marrakesh, Morocco. This lithograph is from the 1800s.