What is the fine-grained topic of the following text: Led by a crippled, brilliant Russian Jew and his daughter, the 'angel' Natasha, 'The Brotherhood of Freedom' establishes a 'pax aeronautica' over the earth after a young inventor masters the technology of flight in 1903. Only return the topic.
Science Fiction Story about a Group Establishing Aerial Peace after Inventing Flight Technology in 1903