Answer:
The Senate of the United States shall be composed of two Senators from each State, <em>elected by the people</em> thereof, for six years; and each Senator shall have one vote. The electors in each State shall have the qualifications requisite for electors of the most numerous branch of the State legislatures.
The Persian empire was successful is because of their tolerance of non Persian citizens living in Persia. Persia also conquered many places making it successful.
Many considered Louis XVI to be ineffectual mainly because of the fact that the revolution had already taken place, and that he was unable to enact any meaningful policies.