What is really stated in this passage is that absinthe tastes like licorice, and that everything else that a person waits a long time to try also tastes like licorice. What this passage actually means, however, is that things are better (or seem better) when you wait for them. For example, a driver's license is not an extraordinary thing in itself, but it seems so much better when a person has had to wait his or her whole life to obtain it. The freedom of being on the road may even also be described as "sweet"- like licorice.
The things that people wait for in life (unless they are food-related, technically) do not actually taste like licorice, but it relates the literal action of the story to the figurative meaning behind it by relating to the reader's understanding that things seem sweeter when they have been looked forward to for a long time.
The most credible source for researching the life of President Bill Clinton is Bill Clinton himself.
It's his life and it's his story to tell. Since he is still alive it is better to conduct an interview with him about his life story. You can also do interviews with the people in his life since childhood to corroborate with his stories.
Huckleberry Finn has a deeper connection with Jim than with any other character in the novel. This contrast is especially striking given contemporary attitudes on race; though published after the Civil War, it recreates an antebellum Southern society that was completely organized around slavery. Relationships between white and black people were thought to be inevitably antagonistic, a master-slave relationship and not one of equals. Huck, however, does not see Jim as a servant; rather, he feels a kinship with him. Both are outcasts; Jim because he is a black man in a slave society, Huck because of his family situation. His father is abusive and alcoholic who doesn't care for him, and the two women who sometimes care for him try to change his character. Therefore he feels at odds in society, and has trouble fitting in. This makes him more sympathetic to Jim than to other white people.