The import substitution industrialization programs used by many developing nations ended up hurting the countries because they eventually had to import ______.

Since the collapse of the Soviet Union, approximately how much of the world’s arms sales is the United States responsible for?

a. Less than 10 percent b. About 33 percent c. Around 60 percent d. Over 75 percent

To establish time order, which of the following must come first?

A. covariation B. the independent variable C. the dependent variable D. the pretest