instruction:
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.
question:
The category of these objects has the property that every morphism is a monomorphism. The spectrum of one of these objects contains one point, and the p-adic numbers for a given p form one of these. These objects necessarily have zero Krull dimension. Those with a finite number of elements have order equal to a power of a prime. Their extensions have a one-to-one correspondence with their intermediates according to the fundamental theorem of Galois theory. A division algebra is one of these without multiplicative commutativity, and can be defined as a ring with multiplicative identity, inverse, and commutativity. For 10 points, name these algebriac structures that include the rationals and reals.
answer:
Science


question:
Racial violence in this city began with the 1909 lynching of William James, as well as the later 1967 murder of black soldier Robert Hunt. Its Chief of Police was shot in 1969 violence stopped when Governor Richard Ogilvie sent in the National Guard. Rooster Cogburn opened a bar here after the Civil War, and it was the inspiration for Eden in Charles Dickens' Martin Chuzzlewit. Stephen Foster wrote a song about being "way down" in this city, which is where Magnolia Manor and Fort Defiance State Park are located. Huck and Jim intend to go to this city to obtain Jim's freedom in Huckleberry Finn, but they end up sailing past it. This city has the lowest elevation of any within Illinois and is located at the confluence of the Mississippi and Ohio Rivers. For 10 points, name this southernmost city in Illinois, which shares its name with a city in Egypt.
answer:
History


question:
According to Maryanoff and Reitz, interconversion of reaction adducts in this reaction results in stereochemical drift. A triply eponymous alternative to this reaction uses the products of the Arbuzov reaction. This chemical reaction is used in the production of Vitamin A1 by BASF. In a similar reaction to this one, a beta-hydroxysilane undergoes an elimination; that reaction is named for Peterson. That previous alternative is named for Emmons, Wadsworth and Horner. Using a phenyl lithium deprotonating agent allows interconversion of erythreo to threo betaine in the Schlosser modification of this reaction. This reaction can preferentially produce Z-alkenes and its intermediate is an oxophosphetane. For 10 points, name this reaction in which aldehydes or ketones are reacted with a phosphonium ylide.
answer:

Science