Your challenge is to plausibly make the Inca Empire not only survive the Spanish invasion as an independent state but to convert to Christianity as well. The POD and other details are up to you.
The conversion must be complete by 1800. There previous religions may survive, but in a minor form and are not able to compete with the Christian majority.
The conversion must be complete by 1800. There previous religions may survive, but in a minor form and are not able to compete with the Christian majority.