I just made a suggestion above. (#36)But it is incredibly improbable seeing as how geography and logistics are not on their side.
A lot of the names being thrown around as kingdoms that could possibly do it mostly landlocked, would need to cross the sahara, and would have to take on other powerful states before even getting to Europe. Let alone conquering even a bit of It. After all it doesn’t matter if they do expand to the coast if they don’t have the power to beat the local European realms.
And damn near everytime they get mentioned it’s “wanked x empire” as if that evidence. Or putting out several ridiculous PODs needed to maybe strengthen these sub Saharan realms while also weakening Europe.
It's not ASB, and it doesn't require a ridiculous POD.