Climate changes, we all know that, it is recorded throughout history, it's the natural cycle of things, hell even Washington had to look out for Icebergs while crossing the Delaware. Had to find them anymore in that river. The US pumped out more then any other nation, well, as far as we can guess.
All that crap had to have an impact so, we are at least partially responsible for all the crap up there. Just what that crap is doing is anyone guess, but if you believe it is the cause of climate change as the sheep have been told and believe, then it is the US's fault.
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.