The software components are known as "system files". These files are responsible for breaking down the many tasks at hand for the computer and making sure each one is completed in the proper order.
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The Dred Scott decision was the U.S. Supreme Court's ruling on March 6, 1857, that having lived in a free state and territory did not entitle an enslaved person, Dred Scott, to his freedom. In essence, the decision argued that, as someone's property, Scott was not a citizen and could not sue in a federal court.