There's alot there.
However, Christianity was in Rome soon after Jesus died. The Emperor Claudius sanctioned a mild persecution against followers of Chretus. Claudius took office in 41 AD. Was Christianity in Africa before then?
Yes Olivant it was. In Egypt there were Coptics and Gnostics within years of Jesus' death.
Well, you'll have to give me a reference onboth of those.
St. Mark brought Christianity to Alexandria and the earliest dating of his arrival there is 48AD. There isn't a reliable dating of Gnostic's arrival in Egypt that I am aware of.