Answer:
anthropology
Step-by-step explanation:
Anthropology focused it's study on the value/principles that people have in the pace and compared it to the value/principles that people have today. These values/principles can be learn by studying things such as the ceremonies that past societies do, their custom, how they arrange their government, etc.
The purpose of the comparison is essentially to study human behaviors. Learning the past cultures will help us understand how the social group/environment around us affect the way we behave as a person.