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I am curious to know if there any notable events that could have sped up the invention/use of planes, jets, rockets. Transport technologies in general.

Earlier we talked about Leonardo Davinci making great leaps, but many deemed this unlikely.
https://www.alternatehistory.com/discussion/showthread.php?t=66103

What about other early attempts at flight or designs that got made, anyone know more about these guys?

http://en.wikipedia.org/wiki/Early_flying_machines#Table_of_flying_machines

This is for a story I am working on here.
https://www.alternatehistory.com/discussion/showthread.php?t=159355
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