Why did Germans hate Jews a long time ago?

Because the Jews were a foreign population who historically were accountable to the King separately from the law among Germans. Many times in the past the Germans rose up against the Jews. When things went wrong they looked around.

And the saw the Jews who reject Christ. It is ludicrous to maintain that Hitler did what he did simply through force and without cooperation.

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.