Usually, when writers use a technique called foreshadowing, they are foreshadowing "<span>B. Clues to hint at what will happen next", since this is done in a way that is implied but is not explicit--to keep the reader engaged. </span>
U.S. had desperately tried to stay neutral, but ties to Britain, propaganda, the sinking of ships by German U-boats, and a German attempt in the Zimmermann Note to get Mexico to declare war on the U.S. pushed the U.S. to getting involved.
Well he thought that the tax cut that was handed to the American people benefited wealthy Americans most, with the hope that their increased income would trickle down to poorer Americans — (it didn’t work as well as everyone had hoped)