Sub-kings are local rulers or leaders who govern smaller regions within a larger kingdom or empire. They often hold authority over specific territories and are responsible for maintaining order, collecting taxes, and enforcing laws. Sub-kings typically report to a higher monarch, such as a king or emperor, and may have varying degrees of power depending on the political structure of the larger realm. In many historical contexts, sub-kings played a crucial role in managing local affairs and ensuring loyalty to the central authority. They could be appointed by the main ruler or inherit their position through dynastic lineage. This system allowed for more efficient governance across vast areas, as sub-kings understood the needs and customs of their local populations.