After the fall of the Roman Empire there was a lot of chaos and disorder. Charlemagne’s death did not help either, for it meant that soon after his children would split up and divide up the empire. The lack of strong leaders lead to a new way of governing and landowning which came to be known as Feudalism; which was a decentralized and loosely organized system of rule based on land ownership.
With feudalism came a new type of organization called the Feudal System which was based on the feudal obligations between vassals and lords. This relationship was based directly on loyalty and maintaining their own end of the bargain. The vassals must provide military service, loyalty, and occasionally give money to the lord. The lord in exchange must give them land and give them protection from attacks.