1. Frederick McDonald Massiah was a engineer. He was one of the first successful black contractors in the United States.
2. Garrett Morgan- Traffic Signal
Burridge & Marshman- Typewriter
Granville T. Woods- Roller Coaster
3. Frederick Jones, he invented the portible air conditioner. This is significant because now you dont have to ride in your car with the windows down, you can just turn the a/c on.
Yo whats good Tyre I read your blog and it was quite interesting.It looks like you did a lot of research when you were writing this. And I know that you want to be an engineer or something like that so you got an idea what a engineer goes through. Good work.
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