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alternatehistory.com
Weeks ago, I saw a map in Deviantart in which depicted an alternate Arabian Peninsula (Nestorian Christianity is the main religion). Here is the map:
Given the PoD where Muhammad (or Muhammad bin Abdullah al-Hashim, given that he's from the Banu Hashim clan of the Quraish) became the first patriarch of Nestorian Church of Arabia, will it affect the development of Arabic language?