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.

[EX Q]: Founder-flush models of this phenomenon propose that it may result from repeated bottlenecks. Changes of ploidy in plants can cause this process due to the frequent sterility of the resulting offspring. The(*) sympatric version of this phenomena occurs between populations in the same region, and punctuated equilibria are a sign of the allopatric variety of this process in the fossil record. For 10 points, name this biological process, in which populations become reproductively isolated and diverge, leading to the formation of new species.
[EX A]: Social Science

[EX Q]: The Keo Nua Pass in this country is one of the few passes through the Annamese Cordillera (CORE-dee-YARE-uh). This nation's capital includes the Temple of the Trung Sisters and is located on the Red River. The imperial citadel of Dai Noi is found in this country's onetime capital Hue (hway). For 10 points, name this Southeast Asian nation that was reunified in 1975 after a bloody war between the communist north and U.S.-aligned south.
[EX A]: Social Science

[EX Q]: The rate at which the operation implied by this statement occurs is given by the Berry-Esseen theorem. Paul Levy proved a version of this statement using the technique of characteristic functions borrowed from Poincare, while various local proofs of it were given by Richard von Mises. A version of this statement is named after Lyapunov and requires the satisfaction of his namesake conditions, while a weaker condition than Lyapunov's is due to Lindeberg. The Edgeworth expansion was developed as an improvement of this statement, the proof of which is similar to the proof of the law of large numbers. For ten points, identify this theorem which holds that the distribution of the average of a set of arbitrarily distributed variables converges to the normal distribution. 
[EX A]:
Science