Kingdom rulers are leaders who govern a specific territory known as a kingdom. They often hold titles such as king or queen and are responsible for making laws, maintaining order, and overseeing the welfare of their subjects. Rulers may inherit their position through family lineage or be chosen by a council or the people. In many historical contexts, kingdom rulers were supported by a system of nobility, including lords and knights, who helped manage land and resources. They often engaged in alliances and conflicts with other kingdoms, influencing trade and cultural exchanges. Examples of famous kingdom rulers include King Arthur and Queen Elizabeth I.