Because they wanted to protect people's liberties. also because they wanted to ensure the rights of the people and that they were protected from the government.
A. Written is the definition of incredible. Hope this helps you out I know this for a fact only because I just had this same question a couple of days ago and got it correct with the answer A.
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Magna Carta was issued in June 1215 and was the first document to put into writing the principle that the king and his government was not above the law It sought to prevent the king from exploiting his power and placed limits of royal authority by establishing law as a power in itself
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