Answer:
greek slaves were owned by individuals, while helots were owned by the state.
The power is concurrent power, examples of concurrent power would be the power to tax citizens, create lower courts, and build roads. These are shared by the federal and state/local government to ensure that the state functions properly.
McCarthy was so powerful because so many different agencies and individuals took part in McCarthyism-related operations. The public was so frightened by the supposed (and real) threat of communists undermining US security that they supported anyone who seemed to be fighting it
