posted by Alexa=( plzz answer!! .
What is Jean Pierre Blanchard most known for in history?
1) *invented the steam engine
2) *first man to swim the English channel
3) *first successful hot air balloon flight
4) *discovered bacteria
I believe that is 3 but you might want to look it up to make sure.
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It is 3)*first successful hot air balloon flight
I think its first successful hot air balloon flight