The congress are voted for by the people. If someone wants to run for Congress, they run against other people. The people choose who they want, and vote for them when the time comes.
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Nobles and knights were obliged to protect those who lived on the manor and provide personal and military service to the king.
In Sparta, the boys were taken from their homes and forced to live in a military school and learn to fight, steal, and murder helots then served in the army until they were 60 while the girls learned to wrestle and defend the city while the men were away at battle. In today's American society, all children are required to get an education in math, science, English, and history. They are not taken from their homes and have a choice of whether or not they want to enter the army.
Your answer is stockholders, modern machinery, consolidation, specialists, and stifling competition, because the antitrust laws were put in place to destroy mammoth enterprises.
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