Answer:
B
Explanation:
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<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be the book that was written by a veteran of the war itself, since this would be considered a "primary source". </span></span>
Answer: There was a significant disillusion towards being able to assist Europeans and other nations in fighting off significant threats. At the same time, postwar disillusion in Europe resulted in a general rejection of the institutions and ideologies that plunged the continent into the worst of all wars.
The improvements made traveling easier and more efficient
