The correct answer is <em>b), most states had passed some safety laws, but enforcement varied.
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As the laws were not enforced, the working conditions were to a minimum. People worked in horrible conditions. Most of them risk themselves doing its activities due to unsafe practices. Accidents were common because there were no training and safety measures to prepare the worker and prevent labor risks.
Smith stated in his theory that the free market economy is Governed by "Invisible hand"
This stands in opposite argument of the free market economy which stated that the free market is governed by supply and demand
hope this helps