Justinian's military goals were to revive the empire's greatness and reconquer the lost western half of the classical Roman Empire. He had partial success reconquering Italy, parts of North Africa and Spain.
Answer:
B- To prevent tyranny by any one branch.
Explanation:
Separation of powers is the way in which powers are separated to ensures that there is no abuse of powers and to prevent tyranny between the functions and provides the ability for check and balance.
Seperation of power also prevent the abuse of power within spheres of government and to prevent the three branches of government to be unable to interfere with one another.
They were the "immigration centers" of that time. If you want citizenship, you go to AI on the west, and EI on the east.