The first one.......

The invention of the explosive led to the major disasters, wars etc., An explosive is a substance or a device that produces a volume of rapidly expanding gas that exerts sudden pressure on its surroundings. Black powder was the first invented explosive It is unknown who invented the black powder. Black powder also known as gunpowder is a mixture of saltpeter (potassium nitrate), sulfur, and charcoal (carbon). It originated in China around the tenth century and was used in fireworks and signals. Black powder is the oldest form of a ballistic propellant and it was used with early muzzle-type firearms. Being a mechanical explosive that is messy, black powder was eventually replaced by cleaner smokeless powder explosives. But these explosives should not be replaced; they should be fully eradicated for the peace of the world…