After <span>the Civil War was the “Rise of Industrial America, 1876 – 1900”. A lot of people could barely make ends meat so they had to have their children as young as three years old work which was extremely dangerous and gave little time for education.
Because of those, and many other reasons, Congress had to reform old child labor laws and create new laws. It had to </span><span>enforce a minimum working age and established maximum hours children could work.
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The answer to your question is the first one.
