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 retreating side tried concentrating its central forces in superior positions on hills around Pozzolengo and Guidizollo. One of the early advances was stifled by mulberry trees and grapevines, and a force under d'Hilliers advanced slightly past Castiglione before noticing the opposing army. Nine hours of fighting along a 15-mile front ensued, and after the battle the Peace of Villafranca was signed. Fought near an Italian village in 1859, FTP, name this victory for a French and Sardinian army which was witnessed by Jean-Henri Dunant, who was inspired by it to help found the Red Cross.

A: History
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Q: One of these organic compounds is converted to an alkene by a diorganochromium compound in the Takai olefination. Compounds may be reduced to this functionality via the use of DIBAL-H (die-bahl aitch), and alkynes are formed by a reaction of these compounds with tetrabromomethane and triphenylphosphine named for Corey and Fuchs. When these organic compounds lack a hydrogen atom in the alpha position, their disproportionation can be induced by a base in the Cannizzaro reaction. These organic compounds are oxidized to carboxylic acids by a diamminesilver (I) complex, leading to the precipitation of metal onto the inside of the vessel, giving the positive "silver mirror" result of the Tollens test. For 10 points, name this special class of ketones with one R group being just hydrogen.

A: Science
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Q: The negotiations of Edward Thorton played an important role in the leadup to this conflict, and an initial offensive by one side stalled following a defeat at Yatai. The other side spent several months retraining under the leadership of Marshal Caxias. Venancio Flores rose to power with the support of Brazil, overthrowing the government of Atanasio Aguirre in Uruguay prior to the start of this conflict. The tide turned in this war after Pedro Meza's defeat at Riachuelo, and Bartolome Mitre refused to grant passage for the forces of one leader at the outset. For 10 points, name this conflict that saw the death of dictator Francisco Solano Lopez and the destruction of Paraguay.

A:
History
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