7) Why does the gravity model work?
A) Large economies became large because they were engaged in international trade.
B) Large economies have relatively large incomes, and hence spend more on government promotion of
trade and investment.
C) Large economies have relatively larger areas which raises the probability that a productive activity
will take place within the borders of that country.
D) Large economies tend to have large incomes and tend to spend more on imports.
E) Large economies tend to avoid trading with small economies.
8) We see that the Netherlands, Belgium, and Ireland trade considerably more with the United States
than with many other countries.
A) This is explained by the gravity model, since these are all large countries.
B) This is explained by the gravity model, since these are all small countries.
C) This fails to be consistent with the gravity model, since these are small countries.
D) This fails to be consistent with the gravity model, since these are large countries.
E) This is explained by the gravity model, since they do not share borders.
9) The two neighbors of the United States do a lot more trade with the United States than European
economies of equal size.
A) This contradicts predictions from gravity models.
B) This is consistent with predictions from gravity models.
C) This is irrelevant to any inferences that may be drawn from gravity models.
D) This is because these neighboring countries have exceptionally large GDPs.
E) This relates to Belgium’s trade record with the U.S.