Why is Herbert hoover important in WWI

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Herbert hoover important in WWI because When the U.S. entered the war, President Woodrow Wilson appointed Hoover to lead the Food Administration, and Hoover became known as the country's "food czar". After the war, Hoover led the American Relief Administration, which provided food to the inhabitants of Central Europe and Eastern Europe.

Explanation:

what are the others?

c) troops march forward in close formation against newer, more accurate weapons