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: 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.

A: Social Science
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Q: In this painting, the colonial print and flowers on the woman's dress symbolize domestic care and the traditional role of women in society. The two figures in this work were modeled after the artist's dentist and sister. The man has a cross look on his face and symbolizes hard labor by holding a pitchfork. For 10 points, name this work by Grant Wood, which symbolized America in the 1930s.

A: Fine Arts
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Q: Models for one form of this phenomenon suggest that asperity junctions are deformed in one regime, while all such junctions are broken in regimes where velocity becomes important. This phenomenon abnormally decreases as a function of velocity in the Stribeck effect, though the dynamics of the system change with the formation of a fluid film. Because it arises due to intermolecular forces, it is dependent to composition, though it is independent of the surface area of a body. Amontons' first law states that it is directly proportional to the mass of the object. The coefficient of the static form of this is generally larger than the kinetic form. For 10 points, identify this force that resists motion.

A:
Science
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