Barriers to entry do not occur when:
a. economies of scale in production exist in an industry.
b. firms requires a professional license or franchise agreement.
c. the firm that introduces a product is granted a patent.
d. a firm controls a scarce resource.
e. diseconomies of scale in production exist in an industry.
e
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Important sources of conflict in colonial America include conflicts between all of the following except
(a) Slaves and masters (b) Native Americans and colonists (c) Puritans, Roman Catholics, and Protestants (d) Indentured servants and masters
The natural rate of unemployment includes
A. Frictional and structural unemployment only. B. Structural and seasonal unemployment only. C. Cyclical and frictional unemployment only. D. Seasonal and cyclical unemployment only.