The ancient Khmer kings adopted a successful monarchy system of Indian civilization as the replica. Being revered as the "god-king" or deva-raja, the Khmer kings were able to rule over the empire with divine kingship and absolute power. This enhanced the kings to mobilize large manpower to serve in its military force to defend the nation as well as to invade the neighbors. In addition, the kings could maintain their extensive irrigation system which was the prime factor of its successful economy with their Khmer laborers and foreign slaves.
Moreover, the kings surrounded themselves with the wise men or the "learned" Khmer Brahmins as their counselors. The Brahmins were known to have acquire vast knowledge which were inherited from father to sons or taught only within the family. These learned Brahmins help the kings to run an efficient administration of the country, and thus resulted in stronger empire.