Archipelago, the main theme of this article, is a term for a region known as Southeast Asia today, especially the countries with similar historical events about ancient rulers, such as Indonesia, Malaysia, Singapore, Thailand, Vietnam, Cambodia, and others. Thus, the writing of this article was directed at reviewing material related to the existence of rulers, especially those engaged in the maritime field in the archipelago, with a focus on discussion on three subjects, including Sriwijaya, Majapahit and Demak, and was selected on the basis of similarities in historical events. The method used was descriptive analysis through books and other written materials, such as journal articles and seminar proceedings. Then, a written description of...