What invention caused many deaths while testing it?
Dynamite
Ladders
Race cars
Parachute
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In which decade was the telephone invented? |
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What now-ubiquitous device was invented by Zenith engineer Eugene Polley in 1955? |
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What Benjamin Franklin invented? |
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What plaything was invented by Joe McVicker in 1956? |
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Who invented Gramophone? |
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