You need a before / after set of maps.
It is one thing to conquer and create an empire.
It is quite another to occupy the land you've conquered and hold on to it.
Alexander did not name a successor. He died when he was only 33 (? google this) and those closest to him destroyed the empire he had created by squabbling among themselves.
Answer:
Separation of Powers in the Central Government. One important principle embodied in the U.S. Constitution is separation of powers. To prevent concentration of power, the U.S. Constitution divides the central government into three branches and creates a system of checks and balances
Answer:
Rise of Christianity and then they were invaded by "Barbarian" forces from the outside
Explanation:
