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A metal alloy including iron.
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It was a smoke they sprayed on dead bodies.
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Paper was made from a hem. Then later paper was made from rag.
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They used ink on wood blocks to create imprints into paper.
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Cards were made from printers printing on thick paper.
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Chemists were trying to make gold, and accidentally created gunpowder. Gun powder is used in small bombs and grenades. It is still used sometimes today.
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A weapon that sprayed people with fire to kill them.
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Wood blocks printed on paper to make the currency.
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It was a wheel that would make one complete turn every 24 hours. Dripping water made it turn.
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Rockets were powered by a black powder. They were eventually used as military weapons.
