what item was purchased by about 40% of all americans that was essential for mass communication and entertainment in the 1920s?

Reasoning based on the ease with which we can bring something to mind involves the use of the heuristic

Which was an important long-term result of the civil war? a a feeling of american nationalism developed. b. industrialism increased in the south. c. differences between social classes declined.

Mankiw attributes – chapter 1 and his 10 principles – differences in living standards within a countryover time and across countries at a moment in time to: a. the presence or absence of inflation and unemployment. b. the allocation of resources between private markets and the public sector. c. those that have dealt successfully with the efficiency v. equality tradeoff and those that haven’t. d. differences in productivity. e. ones that think at the margin and respond to incentives and those that don’t.