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Leonardo da Vinci is rather infamous for having conceived of various inventions before the capabilities to make them sprung up. Yet, one invention he could have likely created is a bicycle. It's disputed whether he sketched a bicycle or not, but it certainly is possible he could have, as he did draw several gear combinations.

So, WI he invents the bicycle and presents it to a noble he was in contact with, and what effects would the earlier invention of the bicycle have?
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