Hitler. All in all, it was Hitler.
He is solely responsible for causing the holocaust. The officers who helped him were following his orders.
The holocaust was carried out by Germany.
Germany is the country that made the holocaust
Hitler and the Nazis were responsible for the Holocaust.
This question doesn't make sense. Do you mean "what was the cause of the Holocaust?" Do you mean "who was responsible for the Holocaust?" Rephrase the question.
Hitler.
Adolph Hitler
Hitler
Adolf Hitler
Hitler, Germany.
He didn't do it all by himself, there are many who took part in it and they are all responsible.
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