To analyze the life of a particular individual among the options available in the question and how it reflected the social changes of the 1920s, let's choose Ernest Hemingway.
<h3>Who was Ernest Hemingway?
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He was an American writer born in 1899, most notably his work<em> "For Whom the Bell Tolls"</em> being a novel inspired by his experience as a correspondent in the Spanish Civil War of 1936.
The writer's life was impacted by the wars that took place in the world in that period, during the First World War, he went to Europe decided to go to war.
In the year 1921, he returns to Paris as a member of a community of expatriate writers, who were called the<em> "lost generation"</em>. Therefore, Hemingway's works reflected his experiences in the period of social changes in the world.
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The Vietnam war was the war between Vietnam and America, France
The answer is The Library of Congress, a great center of information contains almost 100 million items.
The USSR wanted the allies to reconsider there choice of taking West Berlin [since it was in East Germany part]and they wanted to starve the people in West Berlin so that was the cause but the French, British and American flew over to give food to the West Berliners.