How gunpowder was invented is that some scientists in china were experimenting
Saltpeter a powerful agent potassium nitrate. It was used in medical compounds for years until a man thought about mixing the potassium agent with sulfur and charcoal, it had a result of a mysterious powder. Some observers said that smoke and fire the scientist’s body parts were burnt and the houses that they were working at burnt down too.
The powder was used by the reigning Sung Dynasty to defeat the Mongols, whose invasions to China had give a plague the chinese. The mongols were the first ones to subject to flying fire. A arrow with a fixed tube of powder that ignited would make its way through the lines of the enemy. The chinese