Before the Great Wall of China… Africa had a wall so long, it could stretch across an entire country. It’s called the Sungbo Eredo — an ancient wall and moat system in Nigeria, built over a thousand years ago… And guess what? It was made without any tools or cement. Just hands. Shovels made from wood. And pure architectural genius. It’s over 1,600 kilometers long — deeper than a 3-story building… and twice the size of the Great Pyramid. But colonizers said: “There’s no way Africans could have bu