Black Powder in the 9th Century AD (1 jan 800 ano – 1 jan 900 ano)

Descrição:

-The invention of black powder (later known as gunpowder) in China. Black powder is a mixture of saltpetre (potassium nitrate), sulfur, and charcoal. This black powder eventually spread to the Middle East, Europe, and Africa.

-Benefit: Lead to the invention of many fireworks and was used in ceremonies.

-Cost: Lead to the invention of small bombs, which were used to infiltrate forts.

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