Although they existed more than a millennium apart, the great civilizations of New Kingdom Egypt (ca. 1548–1086 BCE) and Han dynasty China (206 BCE–220 CE) shared intriguing similarities. Both were centered around major, flood-prone rivers?the Nile and the Yellow River?and established complex hydraulic systems to manage their power. Both spread their territories across vast empires that were controlled through warfare and diplomacy and underwent periods of radical reform led by charismatic rulers?the "heretic king" Akhenaten and the vilified reformer Wang Mang. Universal justice was dispensed through courts, and each empire was administered by bureaucracies staffed by highly trained scribes who held special status. Egypt and China each developed elaborate conceptions of an afterlife world and created games of fate that facilitated access to these realms.