Final answer:
The legal doctrine that holds employers liable for their employees' acts is respondeat superior. International law operates principally on the principle of state sovereignty, which allows states to govern themselves independently.
Step-by-step explanation:
The legal doctrine that makes the employer liable for an employee's acts is A. respondeat superior. This principle holds that an employer is responsible for the actions of employees performed within the course of their employment. It is a fundamental concept in tort law where employers must answer for the negligence or misconduct of their employees if such acts occur during their employment.
International law, on the other hand, largely rests on the principle of a. state sovereignty. State sovereignty means that states are in control of their own territory and can govern themselves without interference from other states. It forms the basis of international relations and dictates how states interact with each other.