What specific event motivated Alfred Nobel, inventor of dynamite, to establish the Nobel Prizes?

The Nobel Prize has recognized groundbreaking scientific achievements for over a century, but the story behind one of science's most famous products - dynamite - and its inventor Alfred Nobel is a fascinating tale of innovation and legacy. This poll tests your knowledge about how a product innovation led to the creation of the world's most prestigious scientific awards.

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Reading his own premature obituary which called him a 'merchant of death'
The death of his brother in a dynamite factory explosion
A promise to Marie Curie to promote women in science
Competition from other explosives manufacturers threatening his market share