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]: Three of the islands in this group voted for independence in 1975, while Mayotte chose to remain a French dependency. Its first president was Ahmed Abdallah Abderrahman, who was assassinated in 1989. Its highest peak is Karthala, a still-active volcano on the largest island of this group. Other islands include Mwali and Nzwani, which were formerly known as Anjouan and Mohli. Located at the northern end of the Mozambique Channel, FTP, identify this island nation with capital at Moroni.
[A]: Social Science

[Q]: An anharmonic oscillator exploiting this effect as a microelectromechanical system component was proposed by Serry, Walliser, and Maclay. Julian Schwinger has postulated that sonoluminescence arises due to this effect, and this effect requires that bag radius and mass are independent under a combination of the Skyrmion and MIT models, the chiral bag model of the nucleon. One setup for measuring it attached a polystyrene sphere to an atomic force microscope, and Lamoreaux used a torsional pendulum to achieve the first precise measurements of this effect. This force may produce pressures as large as an atmosphere at a separation of ten nanometers. For 10 points, name this effect arising from zero-point energy, described by the attraction or repulsion due to virtual photons between two close uncharged metallic sheets in a vacuum.
[A]: Science

[Q]: Rulers of this empire never held absolute power due to the council of Gbara. One ruler of this empire was assisted by his general Tiramakhan and set his capital at the city of Niani. According to legend, this empire was founded after a battle in which an arrow deprived (*) Sumanguru of his magic powers. A later ruler of this empire underwent an extremely extravagant hajj to Mecca and ruled as Mansa Musa. For ten points, name this African empire that conquered Ghana and was founded by Sundiata Keita.
[A]:
History