What if Constantinople had never fallen to the Turks?

[Samurai Waki]

In this armchair historian's opinion, Manzikert wasn't fatal. I think it was the fourth crusade that really doomed them.

I agree, in a sense. the 4th Crusade was indeed like punching a geriatric in the head, the death wasn't immediate, but it pretty much sealed Byzantium's fate two and half centuries down the road.

There are far too many what-ifs in this scenario, states very easily could have risen that did not, or could not within our time line. However, in my opinion, had Byzantium not fallen to the Turks in 1453, Anatolia would still have remained very much Muslim, and very much a threat some short time down the road.