Answer:
WWI helped usher in the modernist movement.
Explanation:
The disillusionment that grew out of the war contributed to the emergence of modernism, a genre that broke with traditional ways of writing, discarded romantic views of nature, and focused on the interior world of characters.
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The person in question is Woodrow Wilson:
He was the president of the United States from 1913 to 1921, which means that he was the president before, during and after the First World War.
He was very active in the peace process after the war, including proposing the formation of the League of Nations.
Both men were nationalist leaders who supported Pan-Africanism.
