According to Max Weber, what are the three types of legitimate domination?

According to Weber, there are three pure types of
legitimate authority -- three ways in which rulers can claim that their power is
legitimately held.  The three
are:

• Rational/legal grounds.  This is the sort
  of legitimacy that our rulers have today.  They are legitimate because we have set up
  rules for how people may gain power.  They have followed those rules and so therefore
  they have the right to hold power.


• Traditional grounds. 
  This is, for example, the divine right of kings.  These rulers are legitimate because of
  tradition -- because people from their family have always held
  power.


• Charismatic grounds.  This is when a person holds
  power by the simple force of his or her personality.  People trust this ruler because of
  his/her personal qualities.