SOMEONE PLEASE HELP ASAP Based on Rome's size, how did this change Europe?

How did Rome's size contribute to its economy and society?

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.

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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