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: Seas of calcite predominate during times of low concentration of this element. The NIMS probe discovered that Ganymede has a sulfate of this element, which is also used to treat eclampsia. Its molten form is used to make metallic titanium in the Kroll process. The active site of rubisco contains a carbamylated lysine attached to an ion of this element. Its cationic form is used to stabilize the product of PCR, and it is also prevalent in certain reagents in a Schlenck equilibrium. It is found in Grignard reagents as well as coordinated to the porphyrin ring of chlorophyll. For 10 points, name this element with atomic number 12 and symbol Mg.

A: Science
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Q: Cardinal Thomas Gibbons' defense of this organization would lead to Pope Leo XIII issuing an encylical, Rerum Novarum, supporting organizations of their kind. In contrast with its inclusive reputation, a chapter of this group was involved in the Seattle riots of 1886. Internal feuding following the failed Missouri Pacific railroad strike of 1886, and the emergence of a rival organization of skilled craftsmen, meant that by 1900, this organization was almost nonexistent. Name this labor organization that helped lobby for the Chinese Exclusion Act and, for 10 points, was founded by nine tailors in Philadelphia in 1869 and reached its peak under Terence V. Powderly.

A: History
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Q: When this man tricked everyone into thinking he wanted to kill his family, his son was able to pretend to defect to the neighboring town of Gabii, leading to its annexation. Ill omens stopped this man from closing a temple to the god Terminus, but he closed many other temples to build his major construction project, paid for by the capture of Suessa Pometia from the Volscians. This man allied with Octavius Mamilius of Tusculum and later with Lars Porsenna of Clusium, and his accomplishments include clearing Capitoline Hill to build the Temple of Jupiter. Two of his sons were sent to visit an oracle, after which their servant touched the ground with his lips to fulfill a prophecy about kissing your mother. For ten points, name this King of Rome overthrown by Lucius Junius Brutus after his son raped Lucretia.

A:
History
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