The overall goal of labor unions during the late 1800s and early 1900s was to protect workers from heavy abuses by their employers--abuses such as working incredibly long hours and working in very dangerous factory conditions.
Mass production was popularized in the late 1910s and 1920s by Henry Ford's Ford Motor Company, when introduced electric motors to the then-well-known technique of chain or sequential production.
It made the country fear what they would do next without they're president. It made people feel unsafe and scared. - if wrong sorry
The answer is moveable type :)
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