Christianity had a centralized origin geographically speaking in the era before the settling of the western hemisphere. It needed to be near enough to pagan Europe that missionaries could bring the word of God to the pagans lost in their primitive ways. It was a transitional catalyst in bridging the older, fading civilizations of the fertile crescent with the rising civilizations of the north. Africa and Israel are 422 miles apart. Europe was closer to being colonized by an African religion than vice versa. Islam is also from the Middle East not Africa. Jesus was taken to Africa for a while as a kid by his parents, as Barrack Obama was removed from Hawaii and raised in Indonesia.
Christianity has been in Africa since the first or early second century A.D. The disciple Mark is said to have taken the gospel to Alexandria. Coptic Christianity has existed in Africa since the year 55 A.D. and is one of the oldest Christian churches.
It is the case that economic colonization has occurred with other cultural elements simultaneously. It is wrong to conflate the causality and meaning of all issues with those of the primary power and political force though. Even in history one should follow the money to determine power. Land used to be nearly equivalent to money. before machines proliferated even human labor as slaves was of great value to the rich. Today maybe technology is the main creator of economic value as an equal with natural resources while human capital is decreasing in value. Lawyers will face tough competition for work with Artificial Intelligence one of these days I would guess.
Millions of Africans risk their lives to migrate to Europe because it has economic power that southerners desire to obtain. I am concerned that they do not get anything like a true Christianity from Europeans these days. Being a nominal Christian was a convenience for many and a necessity for others. Mankind is corrupt with original sin and there isn't a pure society where one may contemplate philosophically and critically spiritual concerns without pressure if one were so inclined. At some point the economic power of the ultra-rich draws many followers to their values that today is more of a decadence, soma and homosexual, trans-genderized, mono-sexual, atheist mileau rather than Christian. Not everyone is chosen to be a Christian; "all are called and few are chosen". If one is just outwardly Christian and not spiritually renewed with the Lord's grace it may not have effective eternal value.