Which society is most closely associated with feudalism, which was a political system based on lords, vassals, and fiefs?

The European civilization is most closely associated with feudalism. Lords, vassals, and fiefs, were commonly found in European powers such as England, Italy, Germany, etc.

The correct answer would be the medieval society in Europe. This was a very common practice as the European tradition in these times dictated that there would be lords with vassals and they would have serfs. 

C. the delegated powers