Change over Time
Before the invention of the spinning machine and factory, production was done by hand by individual people. The factory allowed production to be done in mass using many people manning machines for one purpose. The idea of the assembly line, where many workers in a line would do one task in the creation of a product and pass it along the line over and over, was perfected in the U.S. This made it so workers did not have to be highly trained and only had to do a simple job. Today, assembly lines usually do not have human workers for most of the process, instead using automated machinery to do each job. Manufacturing is also not done often in the U.S., and instead overseas workers manufacture most products.
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