Fun With Feudalism Crossword

What is the period of time that lasted from the fall of Rome to the fall of Constantinople?
System of economic organization between landlords and their peasants
Highest class in the feudal system
Lowest class in the feudal system
Duke of Normandy who led the Normand invasions in 1066
Protected landlords and their land. In return they were provided with protection and living
Class in the feudal system that owned land and serfs which worked in their fields
System where rulers would give protection to vassals who provided military service in return
Major religion at the time of the dark ages. Faith of it was spread throughout the land
System of dividing a population into different classes which each had their own obligation.