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History - Science
It's a well-known fact that the Nazis killed 6 million European Jews as part of the so-called Final Solution (as well as large swaths of other vulnerable populations). The Holocaust Encyclopedia, published by the U.S. Holocaust Memorial Museum, puts the total Jewish population of Europe at the time at about 9.5 million, which would have added 3.5 million souls to the already grim tally, had Hitler continued.
Adolf Hitler planned for Russia's Ural Mountains to form the eastern perimeter of the Third Reich, though it's unclear what Hitler wanted to do with the UK, as he often swung back and forth on it. However, Germany’s invasion of Ireland would have been much smoother, and the country might have received nominal independence and a pro-German dictator.
With its enemies like the British Empire, Soviet Union, the USA, and even Australia out of commission, Japan's brutal expansion would theoretically meet almost no opposition. Japan would be the master of the Pacific, from the western shores of North America to the border of India, and would become the biggest sovereign power in the world.
Hitler was determined to restore German control of a significant number of African territories like Cameroon, Togo, and Burundi. If Germany never lost, most of Africa would be speaking German and flying a swastika banner — some members of South Africa’s Afrikaner population had even formed pro-Nazi militias in anticipation of their unification with the Third Reich.
Hitler had no plans for invading the USA and didn't believe America could defeat his Aryan empire, and it would have been virtually impossible to occupy another continent apart from Europe and Africa. HistoryNet’s Mark Grimsley suggests that another atom bomb might have ended up dropped on Berlin or another European city, which would have brought the Third Reich to its knees.