Questioning the Holocaust

As high school students, we're asked to reflect and learn things about the Holocaust a lot. We do this in many classes, not just in History. But there's a lot to know about the Holocaust. Why somebody would set out to kill million and millions of people. How they could do that for so long, without being questioned. The Holocaust has to be one of, if not the most impacting historical event to happen in the 20th century. Along with the Holocaust was World War II. But, in it's own way, the Holocaust had a domino effect into the United States involvement with Iraq and Al Qaeda. After World War II and the Holocaust, it was to be determined where the Jews would be able to live, peacefully. It was decided and reinforced by the United States that they could move to the land of Palestine and create Israel. However, this land was already controlled by the Muslims. Taking this land in this manner is believed to have angered them into the terrorist attacks on September 11th, 2001. Of course, these acts led to war of 10+ years. So, as my reflection, do you think that Hitler, when he originally expressed his hatred, thought all these effects would occur?