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]: The electron dipole moment of this particle is at most three times ten to the negative 26th, and would violate CPT-symmetry if it is non-zero. This particle has a half-life of 881 seconds, and can break up into a proton, an electron and an electron antineutrino via beta decay. This particle is composed of one (*) up and two down quarks, and nuclear fission is initiated by the bombardment of this particle. The number of this particle dictates what isotope an atom is, and they have mass roughly equal to that of a proton. James Chadwick discovered, for ten points, what particle found in the nucleus, which, as its name suggests, has a net charge of zero
[A]: Science

[Q]: This battle started after troops under Henry Heth (HEETH) spotted John Buford's cavalry. Key locations in this battle included the Peach Orchard and Devil's Den. One general in this battle, Dan Sickles, disobeyed orders by moving his corps from its location along Cemetery Ridge. That ridge was the object of Pickett's Charge at the end of this battle. George Meade's victory in this battle ended a Confederate invasion of the North. For 10 points, name this battle whose site was later the location of an Address by Abraham Lincoln.
[A]: History

[Q]: This man supported South African mining operations with his newspaper The Representative. He wrote the political novels Coningsby and Tancred, as well as the romance Vivien Grey. This leader used a Rothschild loan to buy forty- four percent of the Suez Canal Company. Unlike his rival, he supported the Second Reform Bill. He was a close friend of Queen Victoria, and created her Empress of India with the 1876 Royal Titles Act. For 10 points, name this British Prime Minister, a Conservative rival of William Gladstone whose surname reflects his Jewish ancestry.
[A]:
History