Henry's charactrization by the author in Red Badge of Courage is done through the thoughts Henry has. He is always referred to as "the Youth," and what he feels and thinks is narrated, unless he is engaged directly in a dialogue. He is the main character of the book and the novel tells his growth from an immature teenager to a war-weary adult.
A metaphor is a speech device that compares one object to another object using words that associate them. In this case, the lines that use this literary device is A which compares hemisphere as the master of its own house.