How many Roman Emperors ruled during the 50 year period coverd by this chart?

answer; ///the declaration of independence;

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.

what is the answer

no because it could make the world a terrible place to live in.