Did America Actually Save the World in WW2?

Aug 2016
Assuming the USA never entered WW2 I feel like the Allies still would've likely won.
It seems likely that the USSR would've taken much more land in Europe otherwise. The Nazis left a huge power-vacuum in Europe. With only Britain, maybe Italy, to stop them, they might've rolled all the way to the Pyrenees (Spain). This would mean the USSR could've controlled a huge percentage of the Earth's natural resources and industrial bases at the time.
It's also a strong possibility that the USA doesn't develop nuclear weapons first, since we're not racing Hitler. The Communists would likely scoop up more European scientists too.

Could/Would the USSR simply annex most of Western Europe?
How effective would any British, possibly other countries too, resistance be? (Spain?, Italy?)
Would partisans put up any more resistance than they did to Nazi Germany?
Could the USSR still be a world-power today?
Would the increased size of the USSR only decrease the amount of time it would take to break up?
Would the Chinese have eventually performed their own Operation Downfall (invasion of Japan)?
Would the USA still be able to (mostly) keep a technological lead in the 1960s-1980s?


Ad Honorem
Jun 2014
Save the world? The entire world was not engaged in the war or under Axis control. I am not sure what Britain could have done to stop the USSR from capturing more of Europe. Western Germany and Italy would have been likely targets, along with Austria.
May 2018
If the USA "never entered WWII" but still loaned/subsidized huge sums of money, equipment and war material, then I could agree the Allies would have likely won. But if the U.S. simply appeased Japan by ceding territory and gave no economic, logistical or military support then I see a world where Churchill negotiates with Hitler to preserve the British Empire, Japan exists as Imperial Japan today and large chunks of Russia become East Germany. The Golden Cavalry of King George that won the fight against Napoleon became the "Golden oil, trucks, money, credit, ships and war material of Uncle Sam." Imperial Japan, Nazi Germany and the British Empire still exist in 2018, and Britain is engaged in a cold war with Germany. The U.S. military bears more resemblance to the U.S. military just before the ACW and the U.S. generally stays out of world affairs. The British Empire remains the leader of the West and leads a NATO-like organization against Japan and Germany as Scottish and German engineers race to uncover the secrets of nuclear energy.
Oct 2016
impossible to say if the USSR would have had the materiel to win. USA provided huge amounts of clothing, food, trucks etc.
and the Brits would have been hurting without US support.

I don't know if the question could ever be answered. one must admit the USA helped considerably at the least.
Oct 2018
Minneapolis, MN
Also time was huge. Imagine if Germany had more time developing their weapons, and didn't have to devote quite as much resources to fighting off the added American forces that moved up any counteroffensive on the mainland.

Where would their V-2 project be with Heisenberg getting more resources and time to build dirty atomic weapons to put on them or larger missiles?

Would Germany lose the majority of its manufacturing capabilities if they held onto air superiority. Remember, the Brits favored area bombing at night. Take your best guess and drop bombs. The US with Gen Eaker wanted the daylight precision bombings. Not just hoping you got the town where they had a manufacturing plant, but targeting the plants themselves (and the use of longer range fighters like the P-38 and P-51 to support them).

Also in the Pacific theater if the US was never attacked and just held their own territories, Japan could have concentrated on China, and possibly even forced Russia to truly fight two fronts.


Ad Honorem
Apr 2017
Las Vegas, NV USA
The African and Italian champagnes were warm ups for Normandy. They did not directly threaten Germany and Churchill's "soft underbelly" concept was ..uh... soft. The real effort to bring Germany down began with Normandy and was hastened by the Rhone Valley offensive.

If this were done sooner, the war would have been shortened IMO and resources would have been saved. US participation was critical for the best outcome, particularly to prevent Stalin from marching to Paris (as he himself said.) It's not out of the question that much, if not all, of Eastern Europe could have been spared Soviet occupation.
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