You are reading the novel Treasure Island, the pirate adventure story by Robert Louis Stevenson. The novel is considered to be a classic work of literature. You are enjoying the story and want to know more about the history of the novel, such as what inspired the author to write it or why it is considered to be a classic.

Conduct research to gather relevant information from at least three credible sources to answer your question. What relevant information did you gather, and what sources did you use? Provide a citation from each source.

1. According to Britannica, Robert Louis Stevenson was inspired to write Treasure Island by his stepson, Lloyd Osbourne, who asked him to write a pirate story. Stevenson took inspiration from the map that Osbourne had drawn in Hawaii and began writing the novel. ("Treasure Island - Novel by Stevenson")

2. The Norton Anthology of English Literature states that Treasure Island is considered a classic because of its impact on popular culture and its enduring popularity. The novel is known for its exciting plot, memorable characters, and vivid descriptions of pirate life. ("Treasure Island - Landmark Status")

3. The British Library explains that Treasure Island is a classic adventure novel that has captivated readers of all ages since its publication in 1883. The novel's themes of adventure, treasure hunting, and moral ambiguity have made it a timeless favorite among readers worldwide. ("Treasure Island" - The British Library)

Sources:
- "Treasure Island - Novel by Stevenson." Britannica, www.britannica.com/topic/Treasure-Island-novel-by-Stevenson.
- "Treasure Island - Landmark Status." The Norton Anthology of English Literature, www.wwnorton.com/college/english/nael/21century/topic_5/landmarkTreasure.htm.
- "Treasure Island." The British Library, www.bl.uk/treasures/childrens/treasureisland172texts.html.