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]: One description of the court of this leader is a History written in Greek by Priscus of Panium. A policy of appeasement was unsuccessfully used by Theodosius II to try and stop this ruler from invading his empire. This man fought a battle against forces under Theodoric I and Aetius on the Catalaunian Plains. This loser of the Battle of Chalons became sole ruler of his people after he arranged the murder of his brother Bleda. For 10 points, name this ruler who gained the title ""Scourge of God"" for his invasions into the Roman Empire while leader of the Huns.
[A]: History

[Q]: The category of these objects has the property that every morphism is a monomorphism. The spectrum of one of these objects contains one point, and the p-adic numbers for a given p form one of these. These objects necessarily have zero Krull dimension. Those with a finite number of elements have order equal to a power of a prime. Their extensions have a one-to-one correspondence with their intermediates according to the fundamental theorem of Galois theory. A division algebra is one of these without multiplicative commutativity, and can be defined as a ring with multiplicative identity, inverse, and commutativity. For 10 points, name these algebriac structures that include the rationals and reals.
[A]: Science

[Q]: Time independent forms of this quantity can be modeled as a power law with the Ostwald-de Waele equation, where n greater than one means the material is dilatant. This quantity is large when convective acceleration can be neglected, allowing Stokes's law to be applied to a spherical object. For a dilute gas, this quantity is proportional to the square root of temperature in a theory named for Chapman and Enskog. This quantity can be measured with a Zahn cup in one industry, and in units of Saybolt Universal Seconds in the petroleum industry. Its (*) kinematic form is equal to its dynamic form divided by its density. Body armor has a unique shear thickening form of this quantity, because in non-Newtonian materials this quantity changes with applied stress. Stokes law gives the drag associated with this quantity. For 10 points, name this property of a fluid that describes resistance to flow.
[A]:
Science