This historian would be using the skill of "comparative analysis," since he or she is comparing a wide variety of sources to draw a conclusion between them as a group.
He began life as a lawyer, and rose rapidly in the legal hierarchy<span> owing to the influence of his cousin Antoine Bohier, cardinal archbishop of Bourges.</span><span>
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The United state did not want to be involve in world affair so theyvdecide to not sign the league of nation so stay canbe isolated.