Since we don't have the full story, it's hard to say exactly. But likely, the main character is the girl who is considered the happiest. There may also be other characters like her family members or friends who influence her life and her state of happiness.
Well, it could be centered around the concept of the American dream in relation to a girl's happiness. Maybe she overcomes obstacles in her life in the USA, like family issues, social pressure, or financial problems, and finally realizes what makes her truly happy. So, the theme might be about resilience and the journey towards happiness.
I'm not sure exactly who the character is without more details about the specific story. There could be many interpretations of who the 'happiest man in the world' might be in different stories.
I'm not sure as I haven't read the specific story. But generally, in such a story, the happiest man could be someone who has achieved his long - desired dreams, like finding true love or fulfilling a great ambition.
One element is surprise. For example, in a story where someone unexpectedly gets a gift from a long - lost friend. It adds an element of excitement. Another is the presence of strong emotions. If the moment is filled with pure, unadulterated joy, love or pride, it makes the story great. For instance, a mother seeing her child achieve something big.
Since I haven't read it, I can't say for sure. But it's probably a man who is described as the happiest, and the story likely revolves around his experiences and what makes him so happy.
I'm not sure specifically as I haven't read this exact story. But generally, it might be about a man who has achieved a great sense of happiness through certain events, relationships, or self - discovery in his life.
The main theme might be about finding true happiness. It could explore how a person, despite hardships or a difficult life, can still be the happiest. Maybe it shows that happiness doesn't come from material things but from within, like having a positive outlook or strong relationships.