The leader of the Oyo Mesi in the Yoruba pre-colonial political system was

In the Yoruba pre-colonial political system, the **Oyo Mesi** was a powerful council of chiefs that had significant influence over the governance of the Oyo Empire. The leader of the Oyo Mesi was known as the **Bashorun**. The Bashorun held a position of great authority and was the most senior member of the Oyo Mesi. This individual was responsible for advising the king, known as the Alaafin of Oyo, and played a crucial role in the checks and balances within the political structure.

The Oyo Mesi, including the Bashorun, acted as a form of counterbalance to the monarchial power of the Alaafin, ensuring that the king did not rule as an autocrat. In times when the king lost the confidence of the Oyo Mesi, it was the Bashorun's responsibility to perform specific rituals that could potentially lead to the deposition of the king. Therefore, the role of the Bashorun as the leader of the Oyo Mesi was vital to maintaining the political stability and governance of the empire.