In sequential games, an especially important part of strategic behavior is to:

Studies by the U.S. Census Bureau have shown that

A) there is significant income mobility in the U.S. over time. B) families remain below the poverty line for an average of five years. C) income mobility in the U.S. is minimal. D) over half the people below the poverty line never move out of poverty.

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.