Answer:
All citizens vote on goverment policy
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.
<span> From the outbreak of World War I, Woodrow Wilson pursued two goals: a non-punitive peace settlement to end the conflict and a reformation of world politics ... In his speech to Congress on 2 April 1917 which asked for a declaration of war, he stated,</span>
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