instruction:
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.
question:
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.
answer:
History


question:
After initiation into the Khalsa (KAHL-sah) in this religion, adherents must wear a wooden comb, known as the "kanga"(KAHN-gah), and a steel bracelet, known as the "kara" (KAH-rah), which are two of the five K's. Arjun (AR-joon) Dev compiled this religion's holy text, the Adi Granth, which contains many of the sayings of the first leader, or guru, of this religion. For 10 points, identify this religion founded by Nanak, whose adherents are mostly found in the Punjab region.
answer:
Social Science


question:
Materials of this type often form sheathes that satisfy a criterion named for Bohm. The namesake frequency of these substances is given in mks by the electron charge times the square root of the quantity number density over permittivity times electron-ion reduced mass and their namesake waves are also named for Langmuir, who discovered them. They are quasi-neutral in a Debye sphere, the radius of which, the Debye length, characterizes their charge shielding; however, many of the atoms in matter of this phase are ionized. FTP, name these collections of dissociated electrons and ions, the so-called fourth phase of matter.
answer:

Science