Intro:
Prester John was a Christian ruler 📏 . Not that kind of ruler, this kind of ruler 👑.
Prester John fought in the Crusades against Muslims. The Christians and Muslims were fighting over Jerusalem. Why? Well, it so happens the lucky city was the holy city of both religions. Isn’t it amazing? Out of all the cities in the world, those two religions’ gods chose that city in particular. I mean, Jerusalem is a pretty nice place, but it’s interesting.
(I ran out of things to write someone else add to this please)