Well, US public opinion was not against Germany until mid 1941…. I cannot help but think if the Nazi’s had at least hide their ultimate motives until the war was won that things could have been much different. Capitalism was much more pure in those days and truly lacked nationalism, no doubt western corporations would influence politics to ensure profit.
Imagine this. Japan played much nicer in their war of conquest with China and used some PR to convince the US public that they were indeed ‘inferior’ to the ‘white man’ but did need some natural resources so lets do business. US does not embargo oil exports to Japan, no Japanese attack required to secure the pacific because they can continue to grow in the east while trading with the west. The Japanese perhaps go after western colonial powers to ‘liberate’ places like the dutch east indies to secure oil and other resources.
Because Japan does not attack the US, Germany does not declare war on the US after pearl harbor. Pearl Harbor was a mistake for the Japanese as it motivated the US public in a rabidly strong way. By Germany declaring war, it lumped them in with the now HATED Japs empire.
The Germans crank up their PR machine buying ads in US newspapers decrying how the european colonial powers were so unfair in the treaty of versailles. How Germany was a democracy (remember, Hitler was elected by the people!) and treated their citizen workers really well, something an american worker surviving the great depresion would be envious of! A plea to US coroporate interests to remind them that Germany was also a capitalist society that shared the american fears of communism. I wonder how many Americans today would care if Germany invaded France as unlikely as that is never mind France’s nukes…just saying. I would imagine with a good PR campaign it would be next to impossible for the US to declare war or spend much tax money helping out european colonial powers against a nice democratic, capitalist Germany who is just trying to get back what is theirs and paciify its neighbours to make it safe for all capitalist companies to do business with.
You get to about August of 1939 and you wonder if maybe you wait 1 more year before attacking Poland. When you (then the soviets) attack the Fench and English declare war on you. You advertise to all nations in the world that it is the Anglo/French colonial alliance declaring war on non-colonial, democratic and capitalist Germany. You have been preparing for a war footing economy but can’t fully sell it to your German people but now you can! You take out France, concentrate on England before the USSR. How would rommel have done with 25 of those 100 divisions sent to Russia? You ‘liberate’ the former territories of the ottoman empire that were to be freed by the British but really were not. You control the middle-east and make real nice with the Persians to prevent a soviet invasion. England sues for peace and you don’t have to try to carpet bomb London as this didn’t help militarily and hurt relations with the US. Maybe you hope a desperate Winston Churchill uses gas on Germany, now maybe the US takes the German side against England maybe not.
Even with a neutral US, Germany now has puppet regimes in many european countries. With England pacified but not invaded you really don’t need to invade Norway and a few other countries. Now with all the oil you need, trading freely with England/commonwealth nations and the US you put your PR campaign to work against communism. With tacit approval from western industrialists Germany and Japan combine to impliment regime change in the USSR. Then if you are truly evil you have all the time in the world to develop nuclear bombs for total world control.