So, a question:
How do we create a world in which the Christian schismatic sect known as Donatism survives to the present day in North Africa?
Get rid of St. Augustine of Hippo? No Byzantine invasion of North Africa? No Muslim invasion?
Resources are sketchy about when Donatism stopped existing, but surely after the Muslim takeover it ended.
What would the world look like with a Donatist North Africa? Would the evangelize? Where? How does this affect the other Xian churches?