Amendments are the only way to bring about constitutional changes

Which of the following differences between cities and suburbs is the LEAST important obstacle to the development of metropolitanwide policies and government institutions?

A. social differences B. racial differences C. economic differences D. political differences

Today, the U.S. federal payroll tax takes an average of about __________ of taxpayers' incomes

A) 10 percent B) 15 percent C) 20 percent D) 43 percent E) 45 percent