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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
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1 янв 1781 г. - 1781 - James Watt patents an improved steam engine This was used in factories and in boats as well as locomotives This made coal mining easier as they could extract excess water deep down

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1 янв 1781 г.
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~ 244 г назад