Answer:
C. Segregation continued in the South despite the law and continued for another 100 years after the Civil War.
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They offered defensive positions and safety to the people. They were also where the Lord lived and where the lord was is where the money was. Thus trade and economic prosperity happened around the castle. Many trades were needed to support the lord and his castle. The lords army had to be equipped and fed. Thus markets and tradesmen were needed to support the lord and his castle.
The most common last name in the United States is John or Smith as most surnames originated from professions of the person.