Q: Question: "How can you keep sounds like pops from happening on your record?"  Context: "Due to recording mastering and manufacturing limitations, both high and low frequencies were removed from the first recorded signals by various formulae. With low frequencies, the stylus must swing a long way from side to side, requiring the groove to be wide, taking up more space and limiting the playing time of the record. At high frequencies, hiss, pops, and ticks are significant. These problems can be reduced by using equalization to an agreed standard. During recording the amplitude of low frequencies is reduced, thus reducing the groove width required, and the amplitude at high frequencies is increased. The playback equipment boosts bass and cuts treble so as to restore the tonal balance in the original signal; this also reduces the high frequency noise. Thus more music will fit on the record, and noise is reduced."  Answer:
A: using equalization to an agreed standard

Q: Question: "Which event occured as a result of class war?"  Context: "Democratic Party candidates were consistently elected to local office, increasing the city's ties to the South and its dominant party. In 1861, Mayor Fernando Wood called on the aldermen to declare independence from Albany and the United States after the South seceded, but his proposal was not acted on. Anger at new military conscription laws during the American Civil War (1861–1865), which spared wealthier men who could afford to pay a $300 (equivalent to $5,766 in 2016) commutation fee to hire a substitute, led to the Draft Riots of 1863, whose most visible participants were ethnic Irish working class. The situation deteriorated into attacks on New York's elite, followed by attacks on black New Yorkers and their property after fierce competition for a decade between Irish immigrants and blacks for work. Rioters burned the Colored Orphan Asylum to the ground, but more than 200 children escaped harm due to efforts of the New York City Police Department, which was mainly made up of Irish immigrants. According to historian James M. McPherson (2001), at least 120 people were killed. In all, eleven black men were lynched over five days, and the riots forced hundreds of blacks to flee the city for Williamsburg, Brooklyn, as well as New Jersey; the black population in Manhattan fell below 10,000 by 1865, which it had last been in 1820. The white working class had established dominance. Violence by longshoremen against black men was especially fierce in the docks area. It was one of the worst incidents of civil unrest in American history."  Answer:
A: the Draft Riots of 1863

Q: Question: "How many tanks were there?"  Context: "By mid-1950, North Korean forces numbered between 150,000 and 200,000 troops, organized into 10 infantry divisions, one tank division, and one air force division, with 210 fighter planes and 280 tanks, who captured scheduled objectives and territory, among them Kaesong, Chuncheon, Uijeongbu, and Ongjin. Their forces included 274 T-34-85 tanks, 200 artillery pieces, 110 attack bombers, some 150 Yak fighter planes, 78 Yak trainers, and 35 reconnaissance aircraft. In addition to the invasion force, the North KPA had 114 fighters, 78 bombers, 105 T-34-85 tanks, and some 30,000 soldiers stationed in reserve in North Korea. Although each navy consisted of only several small warships, the North and South Korean navies fought in the war as sea-borne artillery for their in-country armies."  Answer:
A: 274

Q: Question: "What is known as 'The Arsenal of America'?"  Context: "The city struck fortune in the late 18th century with the inventions and industrial activity of Eli Whitney, a Yale graduate who remained in New Haven to develop the cotton gin and establish a gun-manufacturing factory in the northern part of the city near the Hamden town line. That area is still known as Whitneyville, and the main road through both towns is known as Whitney Avenue. The factory is now the Eli Whitney Museum, which has a particular emphasis on activities for children and exhibits pertaining to the A. C. Gilbert Company. His factory, along with that of Simeon North, and the lively clock-making and brass hardware sectors, contributed to making early Connecticut a powerful manufacturing economy; so many arms manufacturers sprang up that the state became known as "The Arsenal of America". It was in Whitney's gun-manufacturing plant that Samuel Colt invented the automatic revolver in 1836. The Farmington Canal, created in the early 19th century, was a short-lived transporter of goods into the interior regions of Connecticut and Massachusetts, and ran from New Haven to Northampton, Massachusetts."  Answer:
A:
Connecticut