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:
It exists because of electron degeneracy pressure; as electrons are compressed closer together, more exist per unit volume and must take on higher energy levels as mandated by the Pauli-exclusion principle. A relativistic state equation can be used to calculate it as the radius of a white dwarf decreases with an increase in its mass. Developed shortly before its namesakes theory on black holes, for ten points, name this value of about 1.4 solar masses, the maximum mass of a star which can be supported against gravitational collapse.
answer:
Science

question:
This man's military was first led by Saint Arnaud, and his advisors included the dukes of Persigny and Morny. He was satirized in a work plagiarized to form The Protocols of the Elders of Zion, Maurice Joly's Dialogue in Hell Between Machiavelli and Montesquieu. His rule saw a boom in railway construction and the implementation of Baron Haussmann's plan to renovate the streets of Paris. He assisted Victor Emmanuel II against Franz Joseph at Solferino and he was able to briefly annex Mexico under Maximilian, but he was defeated and captured by Moltke at Sedan, ending the Franco-Prussian War. For 10 points, name this French emperor, the nephew of his namesake.
answer:
History

question:
The beneficial type of this concept would be produced by such factors as the development of an AIDS vaccine, a better educational system, or a more efficient highway system. Costs of this type are not factored into the GDP; therefore, the GDP overstates economic welfare. FTP, name this economic concept in which a third party is affected by production or consumption of a commodity.
answer:
Social Science