The Roman empire was well organized with good roads & active trade, so the new religion could spread easily. Constantine was a sun worshipper who feigned Christianity so he could take control and throw out it's one and only goal
The plague was spread through trade
Answer:
Ancient Roman society changed out of all recognition as the Romans conquered first Italy and then the Mediterranean world, and the very notion of what it was to be a Roman came to embrace all the peoples of the empire.
As in all pre-modern societies the economic base of the Roman society at all stages of its history remained agriculture; but on top of this an ever-more elaborate social organization grew up, to create one of the largest and most complex societies in the pre-industrial world.
The american block(capitalism and the communist block
