What genre is The Three Musketeers primarily classified as?

The Three Musketeers is primarily classified as historical fiction because it is set in a specific historical period, the early 17th century, during the reign of Louis XIII of France. The novel weaves together real historical events and figures, such as Cardinal Richelieu and the political intrigue of the era, with fictional characters and adventures. This blend of history with imaginative storytelling is the hallmark of the historical fiction genre, allowing readers to gain insight into the customs, social norms, and political dynamics of the time while engaging in a narrative that is entertaining and dramatic.

Other genres such as science fiction, mystery, and romance do not fit the novel's characteristics as closely. The story does not involve futuristic elements or speculative technology, nor is it centered around solving a crime or unraveling a mystery. While there are romantic elements present in the relationships and pursuits of the characters, they do not dominate the narrative, making historical fiction the most accurate classification for this work.