Answer: Devotion to the emperor.
Step-by-step explanation:
Feudalism also called feudal system depicts the economic, social and political situations in Western Europe between the fifth and twelfth centuries. They were the most distinctive and significant characteristics of the early Middle Ages. The words were coined from the Latin word feudum which means a form of property holding. The terms has placed emphasis invested the fief with exaggerated prominence and placed undue emphasis on the importance of a special mode of land tenure to the detriment of other, more significant aspects of social, economic, and political life.
It was a system in whereby a social hierarchy was formed based on the distribution of land into fiefs (units) and local administrative control. A landowner whom is called lord gave a unit of land along with a promise of legal and military protection when the person who receives it make payment. Such payment were either money or feudal service like military service.