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Tea was mostly used for making people feel better (medicine). They discovered it on accident much like a lot of there inventions. It was found when a man was really sick (going to die) and ate a leaf that saved his life.
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The development of steel eventually made it possible to produce large amounts of steel cheaply. In the 1800's the mass production was crucial to the industrial Revolution in the West.
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Porcelain is made with clay, minerals including quartz,and feldspar. They were made for most things in the kitchen like bowls or plates.
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Paper was made by the Chinese by, cutting bamboo, then soaking, then dipped a screen in pulp, and lastly they pressed and dried it. Paper was in mass production because of how important it was to people.
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A compass helped sailors with voyages. They were pieces of a magnetic mineral called lodestone.
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The Chinese invented a technique called woodblock printing. The printer first drew characters (letters) on paper. Then, glued the paper to a block. When the glue dried, the printer carved out the wood around the characters, which left characters raised on the wood.
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Famous artists drew the designs that were on the back of each card. Europeans were introduced to the cards China was making by the late 1300's
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The first weapon that the Chinese used with their gunpowder invention was a flamethrower. Early, when they first made the flamethrowers, they were powered by gunpowder and oil. They used them for war or attacking other people / countries.
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This invention was found on accident by Alchemists experimented with mixtures of natural ingredients. They were trying to find a substance to help people live forever and trying to make things that were not gold into gold. Neither worked but instead they accidentally created gunpowder.
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Rocket technology was developed in China during the Song Dynasty. Rockets were powered by a black powder made of saltpeter, charcoal, and sulfur. At first, rockets were used only in fireworks but later used as weapons.