When we think about the spread of Christianity, we commonly use maps focused on Europe and the Mediterranean, as we know intuitively that this was the scene of the most intense and important activity. source
We see Christianity as a European reality and ignore Asia and Africa. But this does not reflect the actual history of the expansion of Christianity. The map below is even better reflection of how early Christianity spread. Jerusalem at the centre and gospel advancing into Asia, Africa and Europe.
So how did Christianity spread and how was it wiped out in regions of the world that remained “unreached” for centuries? Read Philip Jenkins' latest book and find out.