The lords and vassals made up one group, and they governed large fiefs and fought for the king.
The clergy comprised another group, who served the church, an establishment which culturally boun Europe together through common practices such as baptisms, weddings, and funerals.
Finally, at the lowest level of the socio-economic ladder were the peasants, who supporte themselves and their lords by working on the fiefs.
The life of a lord centered around fighting.