In the 1950s and 1960s the European unemployment rate tended to be ________ the U.S. unemployment rate, while in the 1990s the European unemployment rate tended to be ________ the U.S. unemployment rate.

In the short run, if a perfectly competitive firm is producing at a price below average total cost, its economic profit is:

a. positive. b. zero. c. negative. d. normal.

Which of the following "magnet countries" has the largest share of immigrants as a percent of its labor force?

A. Australia B. United States C. Canada D. United Kingdom