This discussion will explore which novel has been the most popular and best-selling of the 21st century. We will discuss the plot, characters, and themes of the novel, as well as the impact it has had on readers. We will also discuss the author and their other works, and the cultural context of the novel.We will also look at the novel's success in terms of sales and reviews, and how it has been received by the public. This discussion will be an opportunity to learn more about the novel and its impact on readers and culture.