Avassal offered a lord loyalty in exchange for military service. royal favors. money. protection.

The statement "A vassal offered a Lord loyalty in exchange for military service, royal favors, money and protection" describes the Feudal System that was practiced throughout most of Europe between 800 and 1400.
The feudal system was initially imposed on the English by the Normans when they conquered the English. The idea was to reward those who were willing and able to commit military supplies and services to the Norman cause. There was no shame in being a vassal at the time of conception. 

Good for willis. what’s a stud.