Who invented dynamite in the 19th century?

Alfred Nobel

What enchanted household item sings 'Be Our Guest' in 'Beauty and the Beast'? Which character sings "Almost There" in "The Princess and the Frog"? Who composed the music for the film 'Interstellar'? Which marine animal is famous for its powerful punch strong enough to break aquarium glass? Who did Ruth refuse to leave after her husband died?