Which of the following countries is not one of the world's largest oil exporters?

Which of the following was a critique of using congressional caucuses as a nominating institution?

A)They were prone to majority tyranny. B)They always led to an unqualified nominee. C)They were unrepresentative of the party rank-and-file membership. D)They overrepresented the interests of states with small populations.

The U.S. interstate highway system is a good example of the benefits of __________.

A. the interstate commerce clause B. the doctrine of preemption C. a federal system of government D. local decision-making