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Y_Kistochka [10]
3 years ago
6

What scientific breakthroughs did African Americans make

History
1 answer:
zalisa [80]3 years ago
8 0

The Three-Light Traffic Light, Invented by Garrett Morgan in 1923. With only an elementary school education, black inventor (and son of a slave), Garrett Morgan came up with several significant inventions, including an improved sewing machine and the gas mask.

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