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I know this was discussed before but bear with me please. Let's say Zangara killed Rosevelt and Garner replaced him. What would be the consequences?
1. More isolationist policy for the US?
2. Less economic development due to no New Deal. Probably they would have to do some reforms to increase employment at least a little bit but overall their economy could be worse.
3. Is Garner re-elected or not? If not, who will replace him. If he holds out for two terms who would be next possible candidates?
4. Most importantly, effects on World War II? Is the "Man in the High Castle type story" realistic? Probably less US involvement right away but I've read Garner actually supported the embargo on Japan do that would still lead to Pearl Harbor attack. In this case, with less military reforms and build-up due to worse economic situation and more isolationism that fleet would be weaker do maybe if the Japanese still surprise them they could destroy the entire fleet, crippling the American war effort completely together with other attacks on the Philippines and elsewhere. That could also mean no US occupation of Iceland. ITTL would they take a Germany first strategy or would they focus on Japan to revenge themselves? Something similar to Lend-lease agreement could be made, though not as worth as OTL. Still, even a weaker American economy could quickly outmatch the much weaker Japanese and the German economy which critically lacked resources. I am aware the war would end up the same but would it make any changes on the field? Perhaps prolonging it and changing the post-war map? Maybe the Germans could hold out longer? Any effects on the African campaign or perhaps Normandy
5. Effects on the Manhattan Project? Would the Americans pursue the same way as OTL and if defeating Germany proves harder to defeat would they use it there? When and how?
6. How would the war in the Pacific turn out? Would a total defeat at Pearl Harbor mean anything to Midway or the Coral Sea? Guadalcanal and New Guinea maybe? If the Japanese have more success and succeed in cutting off Australia that would surely be a huge impact with them having more resources from Indonesia and the ability to overrun Burma, threaten India, bomb Australia a lot (but still probably no invasion of Australia) and it could also force the British to divert the resources from their African campaign or bombing Germany to India and Australia dince i suppose the Australians wouldn't be too eager to fight in Egypt or Libya with their own country threatened like this.
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