What if Christianity spreads across Rome had gone differently?

A Jewish reform movement becomes a portable, evangelising faith moving along Roman roads.

If it had gone differently: The Roman world stays polytheist; the church that will hold medieval Europe together never forms.

The real history on Wikipedia ↗

Later turning points that leaned on Christianity spreads across Rome. Change it in the game and the ripples reach all of these.

1. 476The fall of Rome in the West. Without it, The Western Empire holds together; there are no barbarian kingdoms, no feudalism, no medieval Europe as we know it.
2. 1096The Crusades. Without it, Western Europe stays inward-looking; the appetite for spices and silk that will send ships around Africa never develops.
3. 1517The Protestant Reformation. Without it, Western Christianity stays a single church; no confessional map of Europe forms.