Two important considerations during the difference-in-difference approach are

Unemployment related to job search is known as ________

A) cyclical unemployment B) frictional unemployment C) structural unemployment D) tertiary unemployment

In the past, Canada has agreed to set an upper limit on the total amount of softwood lumber sold to the United States. This is an example of a(n):

A. import quota. B. export subsidy. C. voluntary export restriction. D. protective tariff.