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What invention caused many deaths while testing it?

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What invention caused many deaths while testing it?
posted Jun 24, 2015 by Rahul Chandel

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Parachute
Many people who tried to test the first parachutes died by jumping from high places. One attempt was a parachute hat, but the inventor broke his neck while testing it. The first successful parachute was tested from a hot air balloon in 1797, in France, by Jacques Garnerin.

answer May 24, 2016 by Avantika Agrawal
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