Problem: During the first half of the 1920s, engineers at Western Electric, as well as independent inventors such as Orlando Marsh, developed technology for capturing sound with a microphone, amplifying it with vacuum tubes, then using the amplified signal to drive an electromagnetic recording head. Western Electric's innovations resulted in a greatly expanded and more even frequency response, creating a dramatically fuller, clearer and more natural-sounding recording. Distant or less strong sounds that were impossible to record by the old methods could now be captured. Volume was now limited only by the groove spacing on the record and the limitations of the intended playback device. Victor and Columbia licensed the new electrical system from Western Electric and began issuing electrically recorded discs in 1925. The first classical recording was of Chopin impromptus and Schubert's Litanei by Alfred Cortot for Victor.
How early were electrically recorded discs made available for purchase?
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Answer: 1925

Problem: Dominic's search for a close relationship with God was determined and unceasing. He rarely spoke, so little of his interior life is known. What is known about it comes from accounts written by people near to him. St. Cecilia remembered him as cheerful, charitable and full of unceasing vigor. From a number of accounts, singing was apparently one of Dominic's great delights. Dominic practiced self-scourging and would mortify himself as he prayed alone in the chapel at night for 'poor sinners.' He owned a single habit, refused to carry money, and would allow no one to serve him.
Who remembered Dominic as a cheerful fellow?
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Answer: St. Cecilia

Problem: The creation of a modern industrial economy took place. With the creation of a transportation and communication infrastructure, the corporation became the dominant form of business organization and a managerial revolution transformed business operations. In 1890, Congress passed the Sherman Antitrust Actthe source of all American anti-monopoly laws. The law forbade every contract, scheme, deal, or conspiracy to restrain trade, though the phrase "restraint of trade" remained subjective. By the beginning of the 20th century, per capita income and industrial production in the United States exceeded that of any other country except Britain. Long hours and hazardous working conditions led many workers to attempt to form labor unions despite strong opposition from industrialists and the courts. But the courts did protect the marketplace, declaring the Standard Oil group to be an "unreasonable" monopoly under the Sherman Antitrust Act in 1911. It ordered Standard to break up into 34 independent companies with different boards of directors.
What creations brought in the modern industrial economy?
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Answer:
transportation and communication infrastructure