Highest up is the King, who dominates everything. This can be in politics, in a military, etc. Next would be the Eoldermen or noblemen. These men served the King directly and carried out the Kings laws. They were basically administration for the King. Below them are the oegn. The Oegns are a lower class Eoldermen. They could own land and a good portion of them were wealthy. They made up a big portion of the military and were warriors. Below are the Ceorls who made up most of society. They are workers, farmers, etc. This may be confusing because in this class you could either be a peasant, a middle classman, or an upper classmen. At the bottom is obviously slaves who worked for upperclassmen.
Answer:
Religious reasons
Explanation:
Know that this is from my memory but I learned about these recently. The crusades were to promote christianity. they did some good things like open up trade routes and introduce countries to each other but they also pillaged and killed those who would not convert.
Hope this helps:)