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James watts steam engine opened up an entirely new field of application, it enabled the steam engine to be used to operate rotary machines in factories such as cotton mills.

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The basics for vaccination began in 1796 when the english doctor Edward Jenner noticed that milkmaids who had gotten cowpox were protected from smallpox. Jenner also knew about variolation and guessed that exposure to cowpox could be used to protect against smallpox.

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In1862, a French chemist named Louis Pasteur discovered that heat kills germs in liquids, preventing bacterial growth, food spoilage and foodborne illnesses.

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(This is the closest image i could find)

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The spinning jenny was a machine used for spinning wool or cotton. English inventor James Hargreaves created it about 1767 and patented it in 1770. The Spinning Jenny helped usher in the industrial revolution in the textile industry.

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American Eli Whitney( Improved the system be designing interchangeable parts )

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American Eli Whitney( Improved the system be designing interchangeable parts )

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While Eli Whitney is best remembered as the inventor of the cotton gin, he was also the father of the mass production method. In 1998, he figured out how to manufacture muskets by machine so that the parts were interchangeable. The demand for cotton roughly doubled each decade following whitneys invention.

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Henry Bessemer  (made cheaper, better steel)

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Henry Bessemer  (made cheaper, better steel)

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Henry Bessemer made cheaper, better steel. Steel is now replaced with Iron. He was able to cut costs and manufacture a stronger and lighter steel on a large scale.