What is zero nationality in holes?

In Louis Sachar's novel "Holes," the term "zero nationality" is used to describe the character Zero, whose real name is Hector Zeroni. He is portrayed as a marginalized and often overlooked boy, reflecting themes of identity and belonging. The term signifies his status as an outsider, both in terms of his personal history and his social interactions at the juvenile camp, Camp Green Lake. Zero's journey throughout the story highlights the importance of friendship, acceptance, and self-discovery.