II, arguing that this religious transition eroded the Hindu conception of kingship that undergirded the Angkorian civilization. According to Angkor scholar George Coedès, Theravada Buddhism's denial of the ultimate reality of the individual served to sap the vitality of the royal personality cult which had provided the inspiration for the grand monuments of Angkor.
Neglect of public works
According to George Coedès, the weakening of Angkor's royal government by ongoing war and the erosion of the cult of the devaraja undermined the government's ability to engage in important public works, such as the construction and maintenance of the waterways essential for irrigation of the rice fields upon which Angkor's large population depended for its sustenance. As a result, Angkorian civilization suffered from a reduced economic base, and the population was forced to scatter.
Natural disaster
Other scholars attempting to account for the rapid decline and abandonment of Angkor have hypothesized natural disasters such as disease (Bubonic Plague), earthquakes, inundations, or drastic climate changes as the relevant agents of destruction. Recent research by Australian archaeologists suggests that the decline may have been due to a shortage of water caused by the transition from the Medieval Warm Period to the Little Ice Age. LDEO dendrochronological research has established tree-ring chronologies indicating severe periodsofdrought across mainland Southeast Asia in the early 15th century, raising the possibility that Angkor's canals and reservoirs ran dry and ended expansion of available farmland.
Restoration, preservation, and threats
Although there is evidence to the contrary (Leonowens, 1870), many scholars believe the great city
