Where is the sourse of the state's authority?

There are three possible source,such as Traditional Authority,Charismatic- Authority,and Leagal Authority.

Traditional Authority is that in many societies, people have obeyed those in power because in essence,"that is the way it always has been."
It was based on tradition,on long-stand customs,and it was handed down from one generation to the next.

Charismatic Authority is that people may also submit to authority of the extraordinary attraction of individual,for instant Napoleon,Gandhi,Mao Tsu-tung,and so on.
It ca not be transferred another person.

Leagal Authority is that the systems of the political industrial states are based largely on this type.
These systems derive legitemacy from a set of explicit rules and procedures that spell out the ruler's such as gorverner,president or prime minister rights and duties,but the authority is vested in those offices not individuals.
Thus, in this system "individuals come and go.
On the other hand, "the presidency" remains.
Individual officeholders are forced out of office and replaced for some reasons.