Why only Silla has a queen?

Silla is a political power in the history of the Korean peninsula, and its queen is not unique to Silla.

In the history of the Korean peninsula, there have been queens in many dynasties, including Silla, North Korea and North Korea. The emergence of these queens is partly due to political needs and partly due to traditional customs. For example, during the Silla period, due to the shortage of male children, female members played an important role in the succession of the throne, so there were many queens in Silla history.

Therefore, it is not a special phenomenon that Silla has a queen, but it is related to its historical and cultural traditions.