Final answer:
The list of characteristics for Medieval Manors is completed by 'Protected by local knight', reflecting the feudal society where knights played a key role in the defense and organization of manorial estates.
Step-by-step explanation:
Characteristic Completing the List for Medieval Manors
The characteristic that completes the list of Characteristics of Medieval Manors, considering the systems of manorialism and feudalism prominent in medieval Europe, would be 'Protected by local knight'. Manorialism was a system where peasants were organized into villages that owed rent and labor to the nobles, while feudalism involved knights and nobles providing military service to their overlords in return for the right to rent lands and manors. In this societal structure, the local knight played a crucial role in protecting the manor and maintaining order.