I’m the mandate concept,who was the ruler
The ruler in the mandate concept can refer to various historical figures depending on the context. In Chinese history, the concept of the Mandate of Heaven was used, which stated that the ruler (emperor) was chosen by heaven to rule and maintain order in society. If you are referring to this concept, then rulers such as the emperors of the Zhou, Qin, Han, Tang, and Ming dynasties in China, among others, were considered to have the mandate.
In a different context, the mandate concept can also refer to the idea of political legitimacy and authority given by the people. In this case, the ruler is elected or chosen by the people through democratic means. The ruler can be a president, prime minister, or any other leader who has been elected to govern a country. The specific ruler would depend on the country and the time period in question.