For context, the post I'm referring to is a map of Africa with subsaharia Africa in deep green, Sudan in light green and north Africa was white or some other color. The poster was claiming nothing had ever been invented in the green zone. My comment was gonna be this:
Antiseptics before Europeans.
Iron Smelting Not the first to discover it, but recent evidence show it was invented independently.
Some modern Archtecture taking inspiration from Sudano-Sahelian features such as a roof shape favoring natural ventilation. And since I just transitioned to recent inventions, there's the Cardio Pad, invented in Cameroon, to help diagnose cardiovascular disease.
Fwiw, I can confirm I saw the post you're responding to as well, it was made by a racist troll who had a brand new account they switched the username on to match the name of a well known account and then spammed racist off topic crap to a bunch of different communities before getting banned (at least, I presume that's what happened, I just reported their profile and all of their posts then moved on with my day)
Ah I see we met the same lunatic today