Social structures in society can work to provide an ordering of society from things as diverse as institutions like courts and police forces to schools etc. However, depending on the rigidity of social structures certain groups can also be oppressed or left out of the governing decisions within a society.
There were not enough paid workers arriving from Europe quick enough to meet the demand, so they turned towards slave labor. A
What the passage supposed to be, we can’t see it
The answer is A.
The feudal system would follow from the king down to the serfs.
What is confusing is the lords vs. knights. Lords will rule over knights and knights will rule over serfs.
Meaning the system kind of looks something like this:
King
Lord — Lord — Lord
Knight — Knight — Knight — Knight — Knight — Knight
And serfs
Hope this helps, have a great day!