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.

1. 476The fall of Rome in the West, The Western Empire holds together; there are no barbarian kingdoms, no feudalism, no medieval Europe as we know it.
2. 1096The Crusades, Western Europe stays inward-looking; the appetite for spices and silk that will send ships around Africa never develops.
3. 1517The Protestant Reformation, Western Christianity stays a single church; no confessional map of Europe forms.