I hope I can help! :)
It is the idea that ethical laws can be found in human nature.
Have a great day/evening/night! :)
Let me know if you have any additional questions!
-Kappifilms
One of the main ways in which the population of Western Europe changed after the collapse of the Roman Empire is that it became more diverse, since the official borders of the Empire were no more. There was also increased lawlessness. <span />
As of China, they use the system called "mandate of heaven" to select their emperor. The Mandate of Heaven is like god. The gods select who should be their next emperor