Subjection is when a person, group, or government forces another person — or group of people — to submit or be controlled. A dictator's power lies in his subjection of the people over whom he rules.
Many kinds of control can be called subjection, but it most often describes a political rule or the subjugation of a large group of people. Slavery is one terrible, extreme type of subjection, and a king's conquering of a neighboring kingdom is another type. Subjection comes from the Old French subjection, "submission, inferior condition, or captivity," with a Latin root, subjectionem, a putting under."