Most readers of history believe that it was the 11th century,maybe just a bit earlier.
Gun POWDER was invented by the Chinese
The Chinese in the 9th century.
This means what inventions did the Chinese make. example: compas gun powder wheel barrel -ebush
Chinese
The ancient Chinese civilization.
Fireworks originally.
Fireworks and firearms
If you mean Gun Powder, mostl likely the Chinese.
Invented; most likely the Chinese
The Chinese by at least the 9th century CE.
Gun-powder
Probably a Chinese man.