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.

[EX 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.
[EX A]: History

[EX Q]: The relationship between temperature and this quantity is given by the Steinhart-Hart equation. Tunnel diodes have a negative value for this quantity, whose changes are measured by the most common type of strain gauge. The proximity and skin effects cause increases in this quantity with increasing frequency. The time constant tau is equal to indudctance divided by this quantity in an RL circuit. An unknown value of this quantity can be determined with a Wheatstone bridge. This quantity is the real part of impedance in AC circuits, and it is equal to voltage divided by current. For 10 points, name this opposition to the flow of current that is measured in ohms.
[EX A]: Science

[EX Q]: adoption of this person's metaphysics by Alexander Bogdanov led Vladimir Lenin to write a chapter in Materialism and Empirico-Criticism accusing this philosopher and Richard Avenarius of being solipsists. His anti-atomism was rooted in a skepticism about unobservable entities, while his general philosophy of science proposed that theories develop from a human drive toward economy. The strict empiricism exhibited in his history of physics, The Science of Mechanics, was extended to giving sense-perception the sole role in driving science in his The Analysis of Sensations. His empiricist approach influenced the formation of the Vienna Circle, which was formally known as this man's "society. " For 10 points, name this philosopher, who also worked as a psychologist, explaining an optical illusion known as his "bands," and a physicist, doing work on the speed of sound that included defining his "number. "
[EX A]:
Social Science