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| c. 3000 BC |
| | The lever is in use in both Mesopotamia and Egypt | |
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| c. 3000 BC |
| | Wheels are in use on carts, particularly where wood is easily available and the ground rough - as in the forests of Europe | |
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| c. 3000 BC |
| | Potters in Mesopotamia turn their pots on wheels | |
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| c. 2850 BC |
| | The Chinese discover that the cocoon of a certain worm can be unwound, spun as thread and then woven - thus creating silk | |
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| c. 2800 BC |
| | Objects are cast in bronze, at Ur in Mesopotamia - introducing what is later called the Bronze Age | |
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| c. 2500 BC |
| | Yarns of spun cotton survive at Mohenjo-daro, one of the two great cities of the Indus civilization | |
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| c. 1500 BC |
| | The Hittites, in Anatolia, are the first people to work iron - introducing what is later called the Iron Age | |
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| c. 1400 BC |
| | The clepsydra, or water clock, is developed in Egypt | |
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| c. 1000 BC |
| | Iron reheated with carbon is found to be much harder, being transformed into steel | |
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| c. -850 BC |
| | The technique of glazing pottery is discovered in Mesopotamia, though used at this stage only for decorative purposes | |
| | Glazed Babylonian tiles Fotofile CG
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