How many people make up a jury? Why? Who says?
Sorry. This isn't the place for your homework to be answered.
Google "Magna Carta" and the "US Constitution."
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Libraries exist for a reason. Go to yours and research the issue.
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Per my colleagues, I would direct you to Ask, Wikipedia and the Magna Carta, since our jury system was created in the US Constitution by the founders, who came from England. You may also wish to biblical resources..
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