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There is a whole genre of fiction which explore what would have happened if certain historic events turned out differently: Alternative History. If you market your work as part of this genre, then ...
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Source: https://writers.stackexchange.com/a/44246 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
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There is a whole genre of fiction which explore what would have happened if certain historic events turned out differently: [Alternative History](https://en.wikipedia.org/wiki/Alternate_history). If you market your work as part of this genre, then anything goes. But this genre usually focuses on changes which have lasting consequences on a global scale, not just the lives of a few individual people. If you claim or just imply that your work is historically accurate, then anything that contradicts historic consensus will be perceived as a research mistake on your behalf and will likely be seen as a flaw in your work.