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.

[Q]: This battle started after troops under Henry Heth (HEETH) spotted John Buford's cavalry. Key locations in this battle included the Peach Orchard and Devil's Den. One general in this battle, Dan Sickles, disobeyed orders by moving his corps from its location along Cemetery Ridge. That ridge was the object of Pickett's Charge at the end of this battle. George Meade's victory in this battle ended a Confederate invasion of the North. For 10 points, name this battle whose site was later the location of an Address by Abraham Lincoln.
[A]: History

[Q]: Laplaces rule may be used to compute a version of this quantity for its namesake tensor in order to prove the Alon-Tarsi conjecture for Latin squares of even order; that proof uses Cayleys version of this operator. The Cauchy-Binet rule generalizes it to commutative rings, while Leibnizs formula uses permutations of elements to compute it. Setting to zero the result of this operation on lambda I minus A allows us to calculate As eigenvalues. Cramers rule uses ratios of these to solve systems of linear equations. For ten points, name this quantity that is a d minus c b for a 2 by 2 matrix a b c d.
[A]: Science

[Q]: His last instrumental work was a Phantasy for Violin with Piano Accompaniment, while his other late works include a string trio in one movement and a set of variations in G minor for band. He wrote an oratorio based on Swedenborg's vision of heaven in Balzac's Sraphita in which six people are admonished by the archangel Gabriel, while his lighter works include the comic operetta From One Day to the Next, whose libretto was written by his daughter Gertrud. One of his major works features a long duet that is interrupted after each verse by orchestral commentary and contains the solemn "lament of the wood dove. " That work is based on a poem by Jens Peter Jaconsen, and features King Waldemar and Tove, whose castle provides the name of the Gurrelieder. He also wrote a Chamber Symphony in E major and a string sextet based on a poem by Richard Dehmel, Transfigured Night. FTP, name this composer of Moses and Aron and Pierrot Lunaire.
[A]:
Fine Arts