Just wanted to share it with you guys, this, first of all, is a ``what if`` question. First of all, let me give you a historical background:
It has been known that the first turkish tribe that s been roaming around the steppes under the banner of Islam was The Karluks. Karluks are the ones that spread the religion among the Turks and they re known to be founders of the first Turko-Islamic nation that lasted 3-4 centuries. (9th century- 13th century).
Now, I ask you this, what if Christianity was first introduced to the Karluks and say that the Karluks accepted it as their main religion.
First, I would like to say that there were (and in fact still are) turks that accepted Christianity (such as the bulgars and some parts of Pechenegs) But due to their scarce population, they were easily assimilated.
What if a tribes like Ghaznavids, Seljuks or Ottomans, who were always major powers in their reigns, were christians in the first place?
No crusades? A very early end to Islamic Domination? Perhaps wars between Byzantinians and ``asian savages who declared themselves the real protectors of what was left of Rome`` ? Good relations with the pope?
RING! Let the debates begin...