George Washington Carver's contributions really only benefited blacks. His primary contribution was educating black farmers how to farm and which crops they can best grow and rotate. As prior they were largely only successful with watermelon. He did research on uses for peanuts and whatnot.
I'm sure he did invent some things but iirc, they were largely variations of what already existed. I suppose you can argue he helped wide spread adoption of peanutbutter and bringing it to market.
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