Agency
Agency is the technical term for the “chain of authority”, that makes government possible. Any breaks in this authority and the agent is acting unlawfully.
Includes every relation in which one person acts for or represents another by latter's authority, Saums v. Parfet, 270 Mich. 165, 258 N.W. 235, where one person acts for another, either in the relationship of principal and agent, master and servant, or employer or proprietor and independent contractor, Gorton v. Doty, 57 Idaho 792, 69 P.2d 136, 139.
Definition of Agency – Black’s Law Dictionary, 4th Edition Page 84

