Wikipedia has extensive information on the origins of gunpowder / flash powder you should be able to find a wealth of information there.
China
China
Black Powder.
Gun powder is always a mixture.
gun powder was udes for fireworks, then weapons
Gun Powder is the most important thing in a war because if you don't have gun powder you wouldn't stand a chance.
The gunpowder came to blow open a cave to get the vase for the athanian treasury.
Because China invented gun powder.
Saltpetre+sulphurSaltpeter + sulfer = Gun powder
Gun powder was invented in China in the year 1044 AD.
you go to the viking mountain and use the gun powder
john smith had the gun powder injury in 1609.