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First made by leaving tea leaves in boiling water. It became popular in china. In 1200 it became an industry. they made jobs for farmers to grow the trees where the leaves came from, letting them dry, and shipping them. INDUSTRY
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People walked on a treadmill to turn the paddle wheel, which in turn moved through the water, moving the boat forward. EXPLORATION & TRAVEL
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made in the 3rd century B.C.E. The original compass was made out of lodestone, which was magnetic. They later replaced it with a steel needle. It was more accurate. This assisted them on long voyages. EXPLORATION & TRAVEL
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It's made from iron, but easier to bend. They were the first to learn how to melt iron and mold iron ore. by blowing into the cast of steel was created. This was made in the 1800's. INDUSTRY
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a type of very nice pottery. Made by combining clay with other materials. its baked at temperatures then become hard and white. they were in house holds to show welth and classeyness,
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discovered accidental by alchemists who were working with a substance called saltpeter. they were looking for something that would allow them the live forever. MILITARY TECNOLOGY
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This was the first wepon china made that used gunpowder and oil. they used this wepen to set fire to anime's. MILITARY TECHNOLOGY.
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Made during the Song Dynasty. They were powered by saltpeter, charcoal, and sulfur. They were used beofre hand for fireworks, but the used for military reasons. This then went around the world. MILITARY TECHNOLOGY.
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ther was an old canal lock sytem in place, but there is only one downfall which was that people had to drag their boats up ramps. the new system worked by rasing or lowering the water level. EXPLORATION & TRAVEL.
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