In which decade was the ARRL founded?
1940s
1930s
1920s
1910s
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Who invented the Seed Drill? |
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What drink was invented by Charles Leiper Grigg in 1929? |
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For what is Charles Babbage (1792-1871) remembered? |
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Who invented Automobiles using gasoline? |
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Who invented the battery? |
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Where were wigs first invented? |
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Who was the first person to patent the JET ENGINE? |
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The initials JCB on earth-moving equipment are those of the founder of the company that makes it. What is his name? |
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What treat was invented by 11-year-old Frank Epperson in 1905? |
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When was Milk Tray first introduced? |
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