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GE's history of working with turbines in the power-generation field gave them the engineering know-how to move into the new field of aircraft turbosuperchargers.[citation needed] Led by Sanford Alexander Moss, GE introduced the first superchargers during World War I, and continued to develop them during the Interwar period. Superchargers became indispensable in the years immediately prior to World War II, and GE was the world leader in exhaust-driven supercharging when the war started. This experience, in turn, made GE a natural selection to develop the Whittle W.1 jet engine that was demonstrated in the United States in 1941. GE ranked ninth among United States corporations in the value of wartime production contracts. Although their early work with Whittle's designs was later handed to Allison Engine Company, GE Aviation emerged as one of the world's largest engine manufacturers, second only to the British company, Rolls-Royce plc.
What was GE's rank among US corporations in the value of wartime production contracts during World War II?
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The answer: ninth

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Child labour refers to the employment of children in any work that deprives children of their childhood, interferes with their ability to attend regular school, and that is mentally, physically, socially or morally dangerous and harmful. This practice is considered exploitative by many international organisations. Legislation across the world prohibit child labour. These laws do not consider all work by children as child labour; exceptions include work by child artists, family duties, supervised training, certain categories of work such as those by Amish children, some forms of child work common among indigenous American children, and others.
Is all work done by children considered to be child labour?
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The answer: These laws do not consider all work by children as child labour

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Nearly all the gasoline sold in the United States today is mixed with 10 percent ethanol, a mix known as E10, and motor vehicle manufacturers already produce vehicles designed to run on much higher ethanol blends. Ford, DaimlerChrysler, and GM are among the automobile companies that sell flexible-fuel cars, trucks, and minivans that can use gasoline and ethanol blends ranging from pure gasoline up to 85% ethanol (E85). The challenge is to expand the market for biofuels beyond the farm states where they have been most popular to date. The Energy Policy Act of 2005, which calls for 7.5 billion US gallons (28,000,000 m3) of biofuels to be used annually by 2012, will also help to expand the market.
What act calls for 7.5 billion US gallons of biofuels to be used annually by 2012?
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The answer: The Energy Policy Act of 2005

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British imperial strength was underpinned by the steamship and the telegraph, new technologies invented in the second half of the 19th century, allowing it to control and defend the Empire. By 1902, the British Empire was linked together by a network of telegraph cables, the so-called All Red Line. Growing until 1922, around 13,000,000 square miles (34,000,000 km2) of territory and roughly 458 million people were added to the British Empire. The British established colonies in Australia in 1788, New Zealand in 1840 and Fiji in 1872, with much of Oceania becoming part of the British Empire.
What was British imperial strength replace by?
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The answer:
steamship and the telegraph