Answer:
The king is not the most important piece because it is rarely used, like in the feudal system, where his knights and peasants do most of the work, like knights and pawns on a chess board.
Explanation:
All you need is some knowledge about chess, and feudalism.
In feudal Europe, the monarchy (mainly the king) gave out pieces of land to nobles and aristocrats and taxed them. They would then live in the land, and give it out to knights and peasants. The peasants would be taxed in money and crops in return for the housing and farmland. The knights would generally be given more land, but not by much, and they would protect the land they live on, and if called on by the king, would leave and protect the kingdom. The king got rich, while his pawns worked and died in his name.
Because of jobs, safety and family.
