Answer :
Final answer:
The author sets the tone for the book by introducing the Indian legend, 'The Pearl of the World', which leads to a series of events that result in the discovery of the great pearl.
Explanation:
The events that led to the discovery of the great pearl in the book are not mentioned in the provided information. However, based on the context of the question, it can be inferred that the author sets the foundation of the story by introducing the Indian legend, 'The Pearl of the World', which may lead to a series of events that ultimately result in the discovery of the great pearl. The author may describe the legend and its significance, the characters' motivations to search for the pearl, and the challenges they face during their journey to find it.