Answer:
The events leading to a shift in policy about entering war were gradual but ended with US ships being targeted by German U-boats. Until then, Wilson and many Americans believed in a policy of neutrality, all while watching tragedies such as the assassination of the Archduke Ferdinand and sinking of the Lusitania occur in other parts of the world. It was when the US ships were directly attacked that Wilson felt he had no other choice but to declare war on Germany, and many American agreed with this shift.
Explanation:
PLATO
