Many countries impose tariffs or quotas to protect the domestic industry from competition.

According to your textbook, which of the following best explains the fact that income inequality has increased in the U.S. since 1980?

A) The weakening of the labor union movement B) A reduction in economic growth C) A growing distrust of the efficacy of federal government spending programs combined with a rising concern over federal budget deficits D) A rise in the number of single-parent families at low income levels and a rise in two-parent two-earner families at higher income levels

Fill in the blank: According to the authors of your text, traffic congestion can be reduced by ________ the spillover costs associated with driving

A) modernizing B) estimating C) externalizing D) internalizing