In modern times, becoming a duke typically involves being born into a royal or noble family with a hereditary title. However, historically, individuals could also be granted a dukedom by a monarch as a reward for their services or as a way to strengthen political alliances. Here's a general overview of how one could become a duke:
Hereditary Succession: The most common way to become a duke is by inheritance. Dukedoms are often passed down through generations within a noble or royal family. When a current duke passes away or abdicates, the title is typically inherited by the next in line, usually a close relative such as a son or a brother.
Grant from the Monarch: In some cases, a monarch may choose to confer a dukedom upon an individual as an honor or as a strategic move. This historically occurred as a means of rewarding loyalty, political support, or military achievements. However, such grants are less common in modern times.
It's important to note that the process of becoming a duke is specific to the country and its laws, traditions, and systems of nobility. Different countries may have variations in their processes and requirements for becoming a duke.