Twenty Thousand Leagues Under the Sea as an inhabitant of British Colonial India, "is an inhabitant of an oppressed country". Verne took the name "Nautilus" from one of the earliest successful submarines, built in 1800 by Robert Fulton, who later invented the first commercially successful steamboat. Fulton's submarine was named after the paper nautilus because it had a sail. Three years before writing his novel, Jules Verne also studied a model of the newly developed French Navy submarine "Plongeur" at the 1867 Exposition Universelle, which inspired him for his definition of the "Nautilus". The breathing apparatus used by "Nautilus" divers is depicted as an untethered version
Jules Verne its combination of adventurous narrative, travel themes, and detailed historical research, would later be described by Verne as "the first indication of the line of novel that I was destined to follow." Dumas fils put Verne in contact with Jules Seveste, a stage director who had taken over the directorship of the Théâtre-Historique and renamed it the Théâtre Lyrique. Seveste offered Verne the job of secretary of the theatre, with little or no salary attached. Verne accepted, using the opportunity to write and produce several comic operas written in collaboration with Hignard and the prolific librettist Michel Carré. To celebrate