I know that the answer to the question "Lowest pitch instruments such as guitars are given the designation...?" is in "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.". Can you tell me what it is?
Ans: bass

I know that the answer to the question "What happened on the 65th year of the 19th century?" is in "Under threat from the conservative forces, Governor Terrazas was deposed, and the state legislature proclaimed martial law in the state in April 1864 and established Jesús José Casavantes as the new governor. In response, José María Patoni decided to march to Chihuahua with presidential support. Meanwhile, Maximilian von Habsburg, a younger brother of the Emperor of Austria, was proclaimed Emperor Maximilian I of Mexico on April 10, 1864 with the backing of Napoleon III and a group of Mexican conservatives. Before President Benito Juárez was forced to flee, Congress granted him an emergency extension of his presidency, which would go into effect in 1865 when his term expired, and last until 1867. At the same time, the state liberals and conservatives compromised to allow the popular Ángel Trías take the governorship; by this time the French forces had taken control over the central portions of the country and were making preparations to invade the northern states.". Can you tell me what it is?
Ans: emergency extension of his presidency

I know that the answer to the question "which reviews were mixed?" is in "Initial reactions to the novel were varied. The New Yorker declared it "skilled, unpretentious, and totally ingenious", and The Atlantic Monthly's reviewer rated it as "pleasant, undemanding reading", but found the narrative voice—"a six-year-old girl with the prose style of a well-educated adult"—to be implausible. Time magazine's 1960 review of the book states that it "teaches the reader an astonishing number of useful truths about little girls and about Southern life" and calls Scout Finch "the most appealing child since Carson McCullers' Frankie got left behind at the wedding". The Chicago Sunday Tribune noted the even-handed approach to the narration of the novel's events, writing: "This is in no way a sociological novel. It underlines no cause ... To Kill a Mockingbird is a novel of strong contemporary national significance."". Can you tell me what it is?
Ans: Initial

I know that the answer to the question "What occurred in the 14th year of the century known as the 2000s?" is in "According to the Crisis Group, since Myanmar transitioned to a new government in August 2011, the country's human rights record has been improving. Previously giving Myanmar its lowest rating of 7, the 2012 Freedom in the World report also notes improvement, giving Myanmar a 6 for improvements in civil liberties and political rights, the release of political prisoners, and a loosening of restrictions. In 2013, Myanmar improved yet again, receiving a score of five in civil liberties and a six in political freedoms". Can you tell me what it is?
Ans: Myanmar improved yet again, receiving a score of five in civil liberties and a six in political freedoms