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The Slater Mills first started in 1793, when Samuel Slater went to visit Moses Brown. Brown, was a capitalist who had a mill in Pawtucket, Rhode Island. Browns mill did not do well because the machinery constantly broke down. Slater wished to imrove the mill and its machinery. Finally, in 1793 Slater built the first successful textile mill in the country.

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Inventor Eli Whitney, wished to speed up the process of making guns by having machines manufacture each part of the gun. He wanted to invent this process because then if a part of the gun broke a gunsmith did not have to make a whole new gun rather than just replace the part, therefore making them interchangeable. He had the idea of if all machine-made parts were alike then you could easily change a part rather than having to build and make a whole new gun.

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In the start of the 1800s areas were growing into cities. Populations growing meant more problems within the cities. Human modification of the environment began and these areas became more dangerous and polluted. Cities had no sewers and people would throw garbage into the streets. These cities were not taken care of. As dirt and gravel streets turned into mud-slides when it rained.

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In the 1800s child labor was not seen as cruel. Children as young as 7 were working in the factories in Lowell. People believed if children could work on a farm then working in a factory could not be as different. Children were often used in textile mills because of their size, the children were so small they could easily fit around the large machines. Children often worked to make money to help the family.

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New inventions were very helpful for farmers. Jethro Wood manufactured an iron plow with replaceable pieces. Before this manufacture, the iron and wooden plows would have been pulled by an ox or horse in the farms. The invention helped the plow become into a light-weight steel plow created by John Deere not too long after in which helped farmers plow the farms themselves.

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The cast iron stove was invented in 1834 by Philo Stewart. He developed a small enough stove to fit in an averaged sized kitchen. This stove was a great success and Stewart sold about 90,000 stove.

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During the war of 1812 Francis Cabot Lowell found a way to improve the british textile mill. He figured out a way to make the machine spin and weave the fabric at the same time. Lowell found it could be quicker this way.He had created a new mill that was built in Waltham, Massachusetts and had all the machines necessary to turn cotton in the finished fabric.

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The Lowell girls were young teenage girls hired to work with the Lowell mills. They were hired to work in these mills for a few years and then would return home to marry. Most send wages home to their families to help with money. In the beginning parents hesitated letting their daughter work in the mills but to reassure the parents they told the parents they had built boarding houses for these young women to stay.

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In the boarding houses in which the Lowell girls stayed during their time working in the mills these girls shared bedrooms, and worked in the kitchen that served meals. The boarding houses also had lists of rules for the girls to follow when staying in the boarding houses for work.

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The telegraph sent a device that would send electric signals along a wire. It was a new technology by Samuel Morse and the help of scientific discoveries about electricity.