who said legitimate power is often called authority
Authority Max Weber, in his sociological and philosophical work, identified and distinguished three types of legitimate domination (Herrschaft in German, which generally means 'domination' or 'rule'), that have sometimes been rendered in English translation as types of authority, because domination isn't seen as a political concept in the first place.[citation needed] Weber defined domination (authority) as the chance of commands being obeyed by a specifiable group of people. Legitimate authority is that which is recognized as legitimate and justified by both the ruler and the ruled.
Power of attorney A power of attorney (POA) or letter of attorney is a written authorization to represent or act on another's behalf in private affairs, business, or some other legal matter. The person authorizing the other to act is the principal, grantor, or donor (of the power). The one authorized to act is the agent[1] or, in some common law jurisdictions, the attorney-in-fact.