What component of cultural anthropology is comparative and focused on building upon our understanding of how cultural systems work?

ethnology

Explanation:

Cultural anthropology tries to understand different societies by studying their cultures.

It has two components: ethnography and ethnology.

Ethnography tries to understand and study individual cultures by going and living in a culture to learn about a society.  

Ethnology tries to study different cultures. Therefore, it is comparative.  

european feudalism was a combination of legal and military customs in medieval europe that flourished between the 9th and 15th centuries. broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

japanese feudalism. the era of feudalism in japan took place from the 12th through 19th centuries. during that period local rulers, either powerful families or military warlords, dominated the land, while the emperor was merely a figurehead and not a significant political presence.