The agreement of the United States, Canada, and Mexico to eliminate tariffs on the shipment of most products among the three countries is called the

Economics is an empirical science, which means that economists

A) must use laboratory experiments to test their theories. B) evaluate a model or theory by whether its assumptions are consistent with the real world. C) try to prove their models are true by referring to logic. D) look for evidence to determine whether the model is useful or not.

One reason the U.S. government is sensitive to demands by the elderly is that the elderly have higher voter participation rates than members of other age groups

a. True b. False