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.

This dynasty continued a system in which one month out of every five was given to military service by those who lived within 500 li of the capital; that was the Fubing system. A Buddhist savings bank stocked by donations was liquidated during this dynasty and was called the "Inexhaustible Treasury."  Governors known as "jiedushi" first sprang up during this period under emperor (*) Xuanzong. A major insurrection during this dynasty ended after Shi Chaoyi killed himself. This dynasty was  interrupted by the second Zhou dynasty when Ruizong announced that his mother, Wu Zetian, would be  emperor. For 10 points, name this Chinese dynasty that lasted from 618 until 907 and faced the An  Lushan rebellion.
History

Bloodstone, agate, and onyx are chalcedonic varieties of this mineral. Other color variations arise from substituting atoms for silicon; iron for citrine and amethysts, titanium for the rose variety. When cemented it makes sandstone and when fused, silica glass. For ten points, identify this mineral composed of crystalline silicon dioxide.
Science

Theobald V of Blois died during a siege in this conflict, and Frederick VI of Swabia attempted to preserve the body of a ruler who died en route to this conflict using vinegar. That Holy Roman Emperor allegedly died of a heart attack upon entering the cold water of the Cillica river en route to it, and a late victory in it saw the heroic rescue of Christians garrisoned at a Citadel in Jaffa. Cyprus was captured while its main commander was en route to the siege of Acre. Prompted by the fall of Jerusalem after the defeat of Guy of Lusignan and Raymond III at Hattin to Saladin, FTP, identify this crusade led by Phillip Augustus and Richard I, also known as the King's Crusade.

History