Final answer:
The 'Rule of Law' is the concept that all individuals must adhere to the law equally, a principle that was established by the Magna Carta in 1215. The correct option is B.
Step-by-step explanation:
The idea that all people must follow the law and face the same legal consequences is known as the Rule of Law. This concept was codified in historical English documents like the Magna Carta, which was signed in 1215, stipulating that even the monarch is subject to the law.
The Magna Carta established the principles of due process, where no free man could be punished without a lawful judgment by his peers. This framework helped to create a standardized system of justice that heavily influenced legal systems around the world, including the Constitution of the United States.