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For more than 500 years, the Chinese were the only people in the world who knew the secret of making paper.
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The Chinese were the first to learn how to make cast iron by melting and molding iron ore.
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The first chinese compasses were pieces of magnetic minerl called lodestone.
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As you pushed your paddle through the water, the boat moves forward. People walked on a treadmill to turn the paddlewheel, which in turn moved through the water, moving the boat forward.
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It was the world's first segmental arch bridge, it has a span of 123 feet.
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For several thousand years, tea—made by letting tea leaves steep in boiling water—was drunk mostly as medicine.
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Alchemists experimented with mixtures of natural ingredients to find a sucstance that could make people live forever but instaed they made gunpowder on accident.
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Early flamethrowers contained gunpowered mixed with oil, the chinese used them to spray enemies with a stream of fire.
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Rockets were powered by a black powder made of saltpeter, charcoal, and sulfur. The rockets at first were used as fireworks then the Chinese used them as weapons.
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