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 work cites Proudhon's Philosophy of Poverty as an example of a form of a philosophy to which it claims economists, philanthropists, and humanitarians belong. Its second section advocates a ten-point program which calls for the establishment of industrial armies as well as free education for all children in public schools. That section follows one which examines the history of the (*) bourgeoisie and the proletarians and claims that the history of society is a history of class warfare. For ten points, name this work authored by Friedrich Engels and Karl Marx, which discusses how the problems of capitalism would be solved by adopting socialism and eventually the title ideology.
[A]: Social Science


[Q]: The reciprocal relationship between the eigenvalues of the mass matrix of these particles is called the "seesaw mechanism"; the larger eigenvalue may be the mass of their "sterile" variety. One phenomenon predicted by Pontecorvo involving these entities was searched for by (*) MINOS. Reines and Cowan used an aqueous cadmium chloride solution to detect them, and other detectors tend to include large volumes of material, such as Super Kamiokande. For 10 points, name these leptons, the nearly massless products of radioactive decay whose varieties include the muon and tau and which are represented by the letter nu.
[A]: Science


[Q]: This element blocks the flow of calcium through NMDA channels, while compounds containing this metal are used to treat eclampsia. The hairpin ribozyme requires this metal to fold, and the the CorA protein transports this element across bacterial membranes. It is weakly bonded to the terminal phosphate groups of ATP. EDTA is used to chelate this metal, and it is found in a compound that contains a phytol side chain. Its stabilizing effect on the backbones of nucleic acids makes it a necessary cofactor for DNA polymerase, meaning its chloride is used in PCR reactions. Also found at the center of the porphyrin ring of chlorophyll, for 10 points, name this metal present as a +2 ion in solution, with atomic number 12 and symbol Mg.
[A]:
Science