In a brutal world where nature is both friend and foe, the ancient powers take shape.

All ancient civilizations have to trade with their neighbor and enemies, to survive.

Ancient powers had to defend themselves and conquer their enemies by any means possible.

In an unruly world, ancient powers must lead their people and quash any rebellion; to achieve this, they may invent caste systems and more.

What are the reasons behind the failure and destruction of once mighty empires?