> Nestorian Christianity and Buddhism remained common in inner Asia until the 13th century with the Mongol invasions. I was talking about Sogdiana, not other r

> Nestorian Christianity and Buddhism remained common in inner Asia until the 13th century with the Mongol invasions. I was talking about Sogdiana, not other regions of Central Asia, and 1000 CE is a standard cutoff date in scholarship for the end of the other world religions there.