WWII

The main players of WWII were Germany, Italy, Japan, the United States, Britain, and France (similarly to the powers of WWI - Axis v. Allies). Several widely remembered events occurred during this war, such as the Holocaust, Pearl Harbor, and Hiroshima.
The Holocaust was brought about by the Nazi party in Germany led by Adolf Hitler. It was centered around the eradication of people that the Nazis deemed lesser, such as Jews and gypsies. These people were sent to concentration camps where all their belongings were confiscated and they were either mass murdered or set to hard, grueling work. Sometimes they left their homes relatively voluntarily, thinking that they were only being deported. Few Germans knew that this was happening to the Jews. The Nazis also had other camps for their prisoners of war, which were much nicer than those for the Jews.
Pearl Harbor was a surprise attack made by the Japanese on a Hawaiian battle port where many troops were stationed. This was the deciding point for America in WWII. Prior to this point, the United States had abstained from entering the war, but this forced the public to rally against the injustice of the attack. Afterwards, we entered on the side of Britain and France. Japan would not let up in its efforts and was entirely ruthless, turning their own people out of villages for the cause of the war. Kamikaze pilots were not uncommon. Within the U.S. weaponry creation and testing was being done for the purpose of solving this terrible war. Finally, the Oppenheimer came up with the atomic bomb, which he hoped was the weapon to end all wars, or at least the one raging across Europe and Asia. It was dropped twice, in Nagasaki and Hiroshima. Oppenheimer was successful and the Japanese conceded defeat.

Questions I Have:

• Why did the Japanese provoke U.S. involvement in the war?
• What set Hitler so firmly against Jews?