After the feudal treaty, the Lord had a duty to surrender the fiefdom to his vassal, to protect it and to respect it before his judgment. In return, the Lord had the right to demand the services of the fiefdom (military, judicial, administrative) and a right to various “incomes” known as feudal incidents. Examples of incidents are relief, a tax paid when a fiefdom has been transferred to an heir or insane by the vassal, and scutage, a tax paid in place of military service. Arbitrary rules have been gradually replaced by a system of fixed levies, sometimes limited by habit. Eginhard reports the solemn ceremony of thanks, the Duke of Bavaria, Tassilo, in 757 to Pippin (in Vassalage in his hands) (in vasatico se commendans per manus) (in vasatico sendans per manus) (in vasatico se commendans per manus), and the word used is “sacramenta” by placing his hands on the relics of the saints who apparently had been gathered in Compiégne for the solemn occasion and promised to be faithful to the faithful sons of the king. : The relics were those of Saint Denis, Saint Rusticus and Saint Éleuther, Saint Martin and Saint Germain, a frightening number of witnesses. And the men of great birth who accompanied him also swore “… and many others,” adds Eginhard (Eginhard, Annals 757). The castles began to build in a disorderly manner in the 9th and 10th centuries, in response to the old, protecting against invaders and rival masters. They were first built of wood, then stone. As soon as castles were built, cities were built around them. In the Middle Ages, the more land a lord owned, the more powerful a lord was. Therefore, the country was extremely important for the functioning of feudalism.

Liège Lords accepted: 1). Protects the vassal with the entire king`s army. 2). Give the vassal a way to earn a living. 3). Be faithful to the fulfillment of the above obligations. A Villein (or villain) was the most common type of Serf in the Middle Ages. Villeins had more rights and a higher status than the lower serfdom, but there were a number of legal restrictions that distinguished them from freedom. Villeins usually rented small houses with or without land. As part of the contract with the owner, the master of the manor, they were expected to spend part of their time working in the Lord`s fields. Contrary to popular belief, the requirement was often not very painful and often only seasonal, such as the duty to help with the harvest in a timely manner.

The rest of the time of the Villeins spent them cultivating their own land for their own profit. Feudalism was a series of legal and military customs in medieval Europe that flourished between the 9th and 15th centuries. It can generally be defined as a system of structuring society around relationships arising from land ownership, known as fiefdom or fiefdom, in exchange for service or work.