Egypt is often neglected when discussing the role of the growth of Christianity because we all know white historians have a terrible habit of either downplaying or ignoring all together the contributions of African is history. Many people are therefore likely unfamiliar with Egpyts role in the early periods of Christianity.
During Christianity's infancy, its followers were getting persecuted terribly, especially around 100-300 AD. It was very common for leaders in Axum (capital of early Ethiopia) to send soilders to protect persecuted christians all throughout Africa and the middle east, especially Yemen. They were even an integral member of the Council of Nicea, which convened around 325 AD, to establish universal truths that Christians across the world were going to adopt. The main concept they established that meeting was that Christ is fully God and Man, one and the same. Ethiopia, The Romans, The Byzantines, The latin kingdoms, East and Western Europe and and other powerful christian bishops of various Christian nations agreed upon these items.
However, it was during another council, called the Council of Chalcedon in 451, where the official SPLIT in the christian community arose. The European faction wanted to SEPARATE God into a divine being and a "human" form. {Of course this led to artists of the time creating the notorious "white Jesus" image that subsequently was used by demonic church leaders to indoctrinate people for millenia.} The Ethiopian Jews i'm sure realized this was a bad idea and SPLIT with the Christian Church, forming their own church based on monophysite philosophies. The Egyptians created the Coptic Church of Egypt, the Ethiopians created the Ethiopian Orthodox Church.
So this is just to explain that YES, Christianity was in Africa BEFORE the demonic slave traders arrived in the 1600's, waving their flyers with white Jesus and their edited and altered bibles. White folk simply turned Christianity into a vehicle for demonic brainwashing instead of a vehicle for salvation, and for that the devil has rewarded them handsomely...