Collectivization costs involve ensuring that all parties live up to promises made during bargaining

Economics, according to its definition, studies how people:

a. earn and spend money. b. invest in the stock and bond markets. c. make choices in the face of scarcity. d. supply goods in response to demand.

Most of the U.S. national debt is owed to

a. insurance companies. b. foreign and international institutions. c. private investors. d. Federal Reserve banks and government agencies.