In the world of Eberron, Dragonmarked Houses are powerful families that possess unique magical abilities known as Dragonmarks. These marks grant them special skills and advantages in various fields, such as trade, transportation, and healing. Each house is associated with a specific Dragonmark, which influences its area of expertise and social standing. The Dragonmarked Houses play a significant role in the economy and politics of Eberron. They often operate vast networks and monopolies, providing essential services and goods. The houses are not only influential in commerce but also in shaping the cultural and social landscape of the world, making them key players in its ongoing stories.