Under what circumstances could a Far East Asian power or several eastern Asian powers colonize all, most, or part of the African continent in enough time to influence the continent significantly before European colonization?
What does Africa look like post Asian colonization? There are threads concerning a heavy Asian presence in the Americas on a fluke and so it didn't seem too ASB that something similar could happen either on a fluke or entirely intentionally in Africa. Any Asian power is fine and any region of the African continent is also acceptable if most or all of Africa is too Batty.
What are the short/long term effects?