Why were Hindu and Buddhist gods adopted by many Southeast Asian rulers?

Southeast Asian rulers adopted Hindu and Buddhist concepts primarily to legitimize their authority and enhance their status as divine or divinely sanctioned leaders. Rather than resulting from conquest, this adoption was a deliberate choice by local elites who integrated Indian metaphysical ideologies into their existing political frameworks.12

Key reasons for this adoption include:

• Legitimization of Kingship: Rulers embraced the concept of the devaraja (god-king), which consecrated the monarch as an incarnation of a deity, such as Shiva or Vishnu. By positioning themselves as manifestations of the divine, rulers solidified their political power and moral authority.314
• Universal Ideologies: Hindu and Buddhist ideologies offered a cosmic frame of reference that claimed to be universal, allowing rulers to unify diverse populations under a single, sacred political order.1
• Cultural Prestige: Adopting Indian scripts, literature, and architectural styles allowed royal courts to establish themselves as sophisticated cultural hubs.15
• Mutually Beneficial Liaison: The integration of these religions created a symbiotic relationship between the king and religious advisers, such as Hindu priests or Buddhist scholars, who held significant influence in royal courts.1

This process was characterized by the blending of foreign concepts with indigenous traditions, ensuring that the ruler remained the central figure responsible for maintaining the kingdom as a holy land.14