Why did president woodrow wilson originally argue against being too punitive with germany after the war, did he win?

Although the president had advocated for peace during the initial years of the war, in early 1917 German submarines launched unrestricted submarine attacks against U.S. merchant ships. ... On April 2, 1917, Wilson asked Congress to declare war on Germany, stating, “The world must be made safe for democracy.”

Im in 6th grade

answer; i believe the correct answer is enlightenment;

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.