Overview
Between the 9th and 15th centuries the Khmer Empire dominated mainland Southeast Asia from the tip of the Indochinese peninsula to the upper Menam valley. Its rulers styled themselves “king of the mountain” (devarāja), claiming to be living embodiments of the Hindu deity Śiva, and marshaled the resources of the Mekong floodplain to build temple-mountains that replicated the cosmic Mount Meru. At its zenith the empire controlled trade routes linking the South China Sea with the Bay of Bengal, funnelling Chinese silks, Vietnamese aromatics, and Malayan spices through Angkor’s markets while exporting Khmer rice, ivory, and iron.Unlike the compact walled cities of medieval Europe, Angkor sprawled across 1,000 km² of rice paddies, canals, and forest enclosures. A sophisticated network of barays (reservoirs) and canals captured monsoon runoff, allowing three rice crops a year and supporting a population conservatively estimated at 750,000—larger than any contemporary European capital except Constantinople. The empire’s cultural reach extended far beyond politics: Khmer inscriptions, written in both Sanskrit and Old Khmer, give us Southeast Asia’s longest continuous textual record, while bas-reliefs at Angkor Wat provide the region’s most detailed visual archive of daily life, naval warfare, and court ceremony.
History/Background
The empire was proclaimed in 802 CE when Jayavarman II conducted a ritual on Kulen Mountain north of the Tonlé Sap, asserting independence from Javanese overlordship. Successive kings expanded westward along the Mun and Chao Phraya valleys, clashing with the Mon kingdom of Dvaravati and later the rising Tai states. Suryavarman II (r. 1113-1150) broke with tradition by worshiping Viṣṇu rather than Śiva, commissioning Angkor Wat—the world’s largest religious monument—while launching naval expeditions against Champa and Đại Việt. After a Cham sack of Angkor in 1177, Jayavarman VII (r. 1181-1218) rebuilt the capital as a Mahāyāna Buddhist city, erecting the stone-faced towers of Bayon and a 120-km network of highways punctuated by 17 hospitable “rest houses” that pre-dated the European caravanserai system.Climate historians note a weakening monsoon after 1300; canal siltation reduced rice surpluses just as Tai polities began migrating southward. The court shifted southeast to the Tonlé Sap’s outlet in 1431, inaugurating the post-Angkor or “Middle Khmer” period. Yet Khmer princes continued to style themselves “emperor” (samtec kamrateng) into the 19th century, and Angkor’s ritual vocabulary—coronation on a living mountain, sacred sword, and palanquin processions—survives in modern Cambodian kingship.
