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 man achieved full power within his party at the Zunyi Conference. That conference occurred while this man and other members of his party were traveling from Jiangxi (jee-AHNG-shee) to Yanan as part of the Long March. This leader's third wife was part of an influential group that was named the Gang of Four. This ruler was responsible for his country taking part in the (*) Great Leap Forward and the Cultural Revolution. For 10 points, name this political rival of Chiang Kai-shek who was the first leader of Communist China.
[A]: History

[Q]: The elimination mechanism by which the dehydration of its major product occurs necessarily involves the abstraction of an acidic hydrogen and displacement of the leaving group. The catalyst in this reaction itself is regenerated from the deprotonation of water in its final step, which results in the conversion of its intermediate, an alkoxide. An aldehyde or ketone had originally undergone a nucleophilic-addition-type process to produce that alkoxide, which had converted it from a nucleophilic enolate using a hydroxide ion catalyst. Producing a final product known as a beta-hydroxyaldehyde, FTP, name this condensation reaction whose name combines that of its two final products.
[A]: Science

[Q]: This structure was originally thought to be an illusion caused by the black reaction, but its existence was proven by an electron microscope. The GAAP protein located in this structure protects against apoptosis, and its contents are transferred to its lumen. The COPII protein tags vesicles from another organelle which enter the cis face of this structure, which is made up of stacks of flat membrane-covered sacs known as cisternae. For 10 points, name this organelle that processes and packages proteins and lipids to be sent throughout the cell, named for its Italian discoverer.
[A]:
Science