Most Likely Eastern Christian Power?

With any POD after 50 AD, which of these countries is most likely to become Christian?

  • Japan

    Votes: 5 8.5%
  • Iran/Persia

    Votes: 46 78.0%
  • China

    Votes: 1 1.7%
  • Japan

    Votes: 3 5.1%
  • Other (not Mongols)

    Votes: 4 6.8%

  • Total voters
    59
What it says on the tin. You have any POD after 50 AD allowed - which is most likely to become Christian?
 
You have Japan twice on poll. But I would say that Iran is most plausible non-Christian nation which would convert to Christianity.
 
Iran's the closest, so I vote for them.

Japan actually saw a lot of conversions to Christianity in the 16th and 17th centuries until the Shogun started cracking down hard on the religion, so if you have a more religiously tolerant Tokugawa Shogunate the country might end up becoming majority Christian. Of course, while the Tokugawa is technically after AD 50, I don't think it's really in the spirit of the OP.
 
I also voted Iran, but if things had fallen out differently, there's a modest chance of a Catholic plurality China.
 
Iran's the closest, so I vote for them.

Japan actually saw a lot of conversions to Christianity in the 16th and 17th centuries until the Shogun started cracking down hard on the religion, so if you have a more religiously tolerant Tokugawa Shogunate the country might end up becoming majority Christian. Of course, while the Tokugawa is technically after AD 50, I don't think it's really in the spirit of the OP.
The conversion of Japanese during the 16th century is really overrated, they did form a significant minority in places like Kyushu and Osaka, but nowhere near close to archive supremacy, let alone majority, in Japan, by the death of Nobunaga the number of Christians in Japan numbered 200,000, impressive if the total population of the country wasn't around 15 million, so 1.3%.

To answer the OP, I picked Persia/Iran, since it is near the main centers of Christianity (Mesopotamia being being the heartland of the pre-Islamic Iran and being majority Christian) allowing a greater contact and development of missions there, avoid the Sasanian restructuring of Zoroastrianism and you can have Christianity spreading deeper in the Iranian heartland, maybe become the majority there by the 5th or 6th century.
 
Indonesia.
The Chola are baptized by St. Thomas. They expand is in OTL, but they also send out missionaries to their protectorates. Most of their Malay protectorates concert, and after their collapse Christianity is a major unifying factor, and Sryvijaya uses this to field larger armies, which allows them to hold out against the Javanese. Since the Majapahit destruction of Singapore was a major indirect cause of the spread of Islam in Indonesia, Indonesia stays Christian into the modern era.
 
What it says on the tin. You have any POD after 50 AD allowed - which is most likely to become Christian?
Persia isn't too difficult as Christians were making sufficient inroads to "warrant" their suppression by the Sassanids. So options:

1) Christian Arabs do something like OTL's Arab conquests.

2) Christianity continues to make inroads into Persia, eventually a new* dynasty replaces the Sassanids (who are too closely tied to Zoroastrianism to convert)

*or an old one, the Armenian Arsacids were still a thing after all.
 
You have Japan twice on poll. But I would say that Iran is most plausible non-Christian nation which would convert to Christianity.

I don’t know if the Iranians would convert as such, but I voted for Persia on the grounds that the Persians were henotheists and were tolerant of other gods. In fact an interesting POD that has occurred to me lately is what if Jesus, Mary and Joseph fled to Persia instead of Egypt.
 
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