What happened to the Eastern Roman Empire? What factors allowed it to fare so much better than the western half?

The Eastern region had a denser population and more economic activity, also Rome had many conflicting political parties. The position of the city along with the great walls made it a real stronghold, safe from the invaders. The whole eastern part of the empire was rich as well. Trade was flourishing in the east Mediterranean since the ancient years and served as a trade route to further east as well.

Explanation:

were at first enthusiastic in support of the revolution. however, over time divisions of opinion became apparent between federalists and anti-federalists

i believe it d) heterogeneous