In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

Popular festivals in honor of this god include the Tubilustrium and the Equirria. His sacred animals were the woodpecker and wolf and his epithets included Gradivus and Ultor. His consort was the Sabine fertility goddess Nerio, but Ovid relates that he was tricked into sleeping with Anna Perenna. The chief temple of his sat on the Capitoline hill beside those of Jupiter and Quirinus, the latter of whom is associated with his son Romulus. FTP, name this Roman god of war often identified with the Greek Ares.
Social Science

One of this man's works contains a "doppio movimento" movement where a solo clarinet introduces five variations on a traditional melody. Other compositions by this man include Grohg and Hear Ye! Hear Ye! as well as a work which begins with the song "The Open Prairie". He created a compositions which features sections titled "Corral Nocturne" and "Buckaroo Holiday", as well as a square dance where the Roper and Cowgirl kiss, the "Hoe-down". Many of his ballets were choreographed by Agnes de Mille. For 10 points, name this American composer who created Billy the Kid, Rodeo and Appalachian Spring.
Fine Arts

The wife of this novel's protagonist has left him for an American, and his financial worries stem from having to care for his teenage daughter, who goes to an expensive Catholic school. At the beginning of the novel, that daughter, Milly, cajoles him into buying her a horse, and it is this additional expense that spurs him to accept an offer of work from Hawthorne. His German friend, Dr. Hasselbacher, advises him to "take their money, but don't give them anything in return," which inspires him to invent reports, agents, and schematics to send to his employers. For 10 points, name this novel, in which James Wormold, a vacuum cleaner salesman from Cuba, is recruited into the British Secret Service, a work by Graham Greene. 

Literature