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Intermediate World's Richest Companies By Market Cap

Which company became the second public company to reach a US$3 trillion market capitalization?

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Intermediate World's Richest Companies By Market Cap

Which energy company became the first publicly traded company to reach a US$2 trillion market cap?

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Easy World's Richest Companies By Market Cap

Which Taiwanese company is the world’s leading contract manufacturer of advanced computer chips?

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Intermediate Leonardo Da Vinci's Inventions

What flapping-wing aircraft did Leonardo da Vinci study as a model of bird-powered flight?

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Easy Leonardo Da Vinci's Inventions

What device did Leonardo da Vinci sketch as a conical parachute for slowing a person's fall?

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