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: During this dynasty, the minister Qin Gui committed an infamous act of treachery against the general Yue Fei, and the author of the Comprehensive Mirror for Aid in Government, Sima Guang, opposed the New Laws of Wang Anshi. Zhao Kuangyin formed it, and gunpowder, the magnetic compass, and moveable type were invented during this era, before the death of emperor Qinzong led to the decline of its Northern period, but its southern incarnation survived until the Mongol conquest. For 10 points, name this dynasty is credited with unifying China after the Ten Kingdoms and Five Dynasties periods.

A: History
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Q: This philosopher argued for a hybrid approach of historical materialism and psychoanalysis that he termed the "progressive-regressive method." He used the example of a man that fails to meet his friend after walking into a cafe to illustrate the second title concept of one of his works. This man densely analyzed the life of Gustave Flaubert in his book length study The Family Idiot. His short treatise (*) Search for a Method recapitulates themes of another of his books, which calls humanity a "fused group." This author of Critique of Dialectical Reason argued that the object of consciousness exists as "in-itself," but experience exists "for itself" in a book that argues the authentic life is one way to escape the grip of "bad faith." For 10 points, name this existentialist author of Being and Nothingness.

A: Social Science
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Q: A second-order version of this effect was derived by Opik and Price and results from mixing between states, while determining the adiabatic potential energy surface for systems undergoing this effect leads to the "Mexican Hat" potential. UV-vis spectra for systems undergoing it show splitting of bands, and this effect explains the structure of the cyclooctatriene anion. This phenomenon is responsible for the sharp vertical transition line between low-spin and high-spin states in some Tanabe-Sugano diagrams, and another version of this effect occurs because orbital angular momentum defines the parity of the wavefunction in linear molecules, a version partly named for Renner. It occurs most strongly in systems in which the e sub g orbitals are unevenly occupied, forcing them into a lower energy state. For 10 points, name this effect in which a molecule is distorted in order to break degeneracy and lower energy.

A:
Science
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