What were three contributions that pearl harbor made to U.S.society?

Not quite sure what you are looking for here, but this is my take on your question: The diplomatic justification to join the Allies in a war against the Axis powers. A demonstration of the dangers of an isolationist foreign policy. The moral indignation that would fuel the US war machine at home and in military until the war was over.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.