It was a easy way to give everyone a place in society. I was organized and easy to maintain for the European governemnt, but it wasn't a fair system because peasants and serf were unable to work upwards in the society.
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I think the answer is <span>a. the growth of radical Islamic fundamentalism. Muslims that entered this would likely go to terrorism. Those that displayed their extreme Islam fundamentalist are usually driven to make it like a religious war that would promote their religion.</span>