Answer:
Mandate of Heaven
Step-by-step explanation:
The Mandate of Heaven was a doctrine developed by the Zhou dynasty of China. This stated that there could only be one legitimate ruler in China, and that this ruler could only rule with the approval of the gods. Therefore, if he was considered to be ruling unfairly, he could potentially lose their approval. This meant that the dynasty, or the rule of an individual emperor, had no time limit as long as they were able to keep the mandate.