Primary sources are important sources of unbiased historical information, and they represent the correct form and order of historical facts. primary sources such as manuscripts, letters and books such as history of Trismengitus serves to inform how the society have evolved over generations while at the same time maintaining a cause-effect correlation.
The answer is a. necessary and proper. (i'm not positive that that's correct but that's what i would put.
Answer:
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The answer is a. the emphasis on peaceful resolution