Impressive list, r195,
Electric rice cooker The Shinkansen Tactile paving The Laptop The Walkman The Novel Blue LED lights Car Navigation System Katana Imari Porcelain Microcomputer CDs, DVDs, and Blu-Ray Karaoke Emoji Pokemon Jet ski
That's just Japanese men. .25% of the world's population.
My point is simply that when a particular place prioritizes education and invention and there is a political system and infrastructure to support that, an incredible list of inventions can quickly accumulate. Britain, the US, Germany, and to a lesser extent, Russia and France put these conditions into place in the second half of the 19th century into the 20th century and there was an explosion of inventiveness. That center of inventiveness shifted to Asia in the second half of the 20th century. That says little about individuals or races. Instead, it's all about where the CONDITIONS of creativity have been put into place.
Black people DID build the southeast and the south of the US. There's no doubt about that. The population of the south was 1/3rd black from the founding of the nation through the beginning of the 20th century. White people did not do the majority of manual labor in slave-holding states. With few exceptions, they did not clear the land, they did not plant the crops, they did not dig the drainage ditches, they did not pave the roads, they did not lay the railroad tracks, they did not cut the forests, they did not make the bricks, they did not lay the foundations of the houses, they did not do any of that. They also didn't cook, clean, wash clothes, feed the pigs, or slaughter the cattle. They didn't bale the cotton, organize the tobacco into sheaves, or groom the horses. They may have supplied materials, they might have had a plan and told people (slaves) what to do, but they didn't do most of the labor themselves. Washington DC was surrounded by Virginia, a slave state, so it too was built by black people. Alexander Archie, a civil engineer, designed and built many of the most iconic roads in DC. Considering the obstacles put into place for black people, having a George Washington Carver, or an Alexander Miles who invented the automatic closure for elevators is rather incredible.
Among more modern inventions by black people have been laser cataract surgery, the color PC monitor, the X-ray imaging spectrometer, the inventor of extraction and industrial synthesis of steroids, the first effective medical treatment for leprosy, the rotary blade lawnmower, the first gigaherz processor chip, first online banking website, the dry-cleaning process, refrigerated trucks for transporting food, the gas mask, central heating furnace using natural gas, and many more things. I would term these inventions AMERICAN inventions, because the conditions for creativity were in place.
I would be very surprised if you knew any of this.