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.

Leon Gambetta attempted to organize one side's defenses in this war, but fled in a hot air balloon. The Treaty of Frankfurt ended this war, in which the Battle of Sedan was fought. One cause of this war was the possibility of Leopold of Hohenzollern gaining the Spanish throne. Another cause of this war was an edited letter between the ambassador of one country in this war and Wilhelm I. That document known as the Ems Dispatch was used to advance the goals of Otto von Bismarck. For 10 points, name this 1870-1871 war between two European nations that led to German unification.
History

In 1695, Josua de Grave made another study of the same subject as this painting, but from a different angle. In the center fight of this painting, the roof of the Armamentarium is just visible behind a much larger gated building. An anecdote concerning this painting relates that it was chosen personally by William of Orange, although it was most likely purchased by the Rijksmuseum. The top half of this painting depicts only the sky, with very dark clouds at the top of this painting, and at the bottom of this painting, several people are standing by a boat while two women in black dresses are conversing to the side. The foreground and the background of this work are divided by a large river which reflects the buildings of the background. For ten points, identify this cityscape, a work by Jan Vermeer.
Fine Arts

This man's time in Spain resulted in works such as Tales of the Alhambra. In a short story that appears in this author's Sketch Book of Geoffrey Crayon, a man falls asleep for twenty years, awaking to find the American Revolution has occurred. In another short story by this author, Brom Bones marries Katrina van Tassel after Ichabod Crane disappears during an encounter with a headless horseman. For 10 points, name the American author of "Rip Van Winkle" and "The Legend of Sleepy Hollow."

Literature