first comprehension

A certain king once fell ill and doctors declared that only a sudden fright would restore him to health but the king was not a man for anyone to play tricks on,except his fool.One day,when the fool was with him in his boat, he cleverly pushed the king into the water.Help had been previously provided and the king was drawn ashore and put to bed.The fright, the bath and the bed cured the diseased king;but he was so angry with the fool that he turned him out of the country.The fool returned,however,and the king ordered him to be put to death.
Saying privately that he would only repay fright with fright,he directed the executioner not to use the axe but to let fall a single drop of water on the fool's neck.The fool was led to the jail.
The executioner dropped a drop of water on the fool's neck.Then amid shouts and laughter, the fool was asked to rise and thank the king for his kindness.But the fool never moved,he was dead- killed by his master's joke.

Now,answer the following questions:

1.How could the king who had fallen ill be cured?
2.Why did the king turn the fool out of his country?