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When the gunpowder was first invented, its ingredients were mystery and a closely guarded secret of national importance. Today, they are public knowledge but that does not make gunpowder any less dangerous.
Gunpowder is on of great inventions that had a great impact on the history of the world in both negative and positive ways. It was used in weapons and was a fuel of many conquests but it was also used in fireworks and civil engineering.