Google is a good place to look too
The vES ending should be added to nouns that end in -f or -fe in their singular form. In that case, the -f or -fe is removed and -ves is added as a plural ending. Examples include: life - lives, wife - wives, knife - knives, wolf - wolves, leaf - leaves. But there are also exceptions, such as belief - beliefs, cliff - cliffs, roof - roofs.
He is what it is describing
C) a tiered social structure where members of the lower
class served those of the tier above
Feudalism was definitely a tiered system—there were four
tiers made up of the king at the top followed by the nobles/lords followed by
the knights followed by the peasants.
The way this structure worked is that the tier above would provide land
to those below, and those below would be indebted to those above. For instance, because knights would provide
land and/or protection to peasants, the peasants would work on farms and
provide knights food and/or other products. The knights, being on land that came from
nobles, would promise to fight for them when needed and also provide the food
and other products produced by the peasants.
The nobles, in turn (in payment for the land the king had bestowed unto
them), would supply the king with an army made of knights as well as the food
and products that trickled up from the peasants. Thus, land granting would start with the king
who give to nobles who would give to knights who would give to peasants for
payment of the above mentioned.
