I would say that the answer is (C), because of when the feudal system began to develop. From what I know it started to develop soon after the fall of the roman empire. Hence, a system such as the feudal system could allow nobles to give protection to local people which settlements needed.
<span>C. Nobles could protect their property and local people from Viking raiders and armed bands by offering land in exchange for loyalty and military service.
Meat Inspection Act, Prosecution of Northern Securities, Pure Food and Drug Act, Children's Bureau of Labor, Federal Trade Commission, and the Clayton Anti-Trust Act
