Residents of greek city-states exercising the right to vote is an example of which major theme that affected the period of 600 bce to 600 ce?

Citizenship is the answer.

on my last question

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.