President Herbert Hoover.
People questioned Hoover's compassion, because he seemed unwillingness to provide direct relief to Americans.
The major cause is the Germany was using submarines to sink down the American ships and killed all of the American soldiers, and that is why the U.S join the war and pay back... mark me brainlist please...
Grenada
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It was the world's longest humanmade structure at more than four thousand miles actually constructed from a series of smaller walls that were connected together built to guard against Mongol invaders.
Hope this helps. :D
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