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The first steem engine was created by James Watt in the year 1775 The Steam Engines used to pump water out of mines in England.
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The Cotton Gin was created by Eli Whitney and it was invented in 1793 to clean cotton much faster and for the slave owners to have more slaves.
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The first Telegraph was invented by Samuel F.B. Morse and was use to sent messages with signals like dots and lines
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The first sewing machine was invented by Elias Howe and was useful for all the women
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Issac Singer was the one who improved the sewing machine in 1851
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Orville and Wilbur Wright were the ones who invented the first airplane that helped transport goods and helped the economy
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the telephone was created back in 1876 by Alexandar Graham Bell in 1876