I believe that the answer is C
Answer:
Feudalism deals with the relationship between nobles and vassals. Manorialism deals with the relationship between the vassals, or the lords, and the peasants or serfs.
Explanation:Manorialism was an economic structure which described how pieces of land were managed. It primarily concerned the common people of the time, the peasants, as they were the ones providing the labor on the land. Feudalism was a social structure rooted in an exchange of land for military service.
Anthropology is the study of all aspects of humans. Archaeology is the study of artifacts left behind by humans
All I really know about Karl Marx is that he didn't like capitalism. So I would have to say the invention of capitalism.