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Khmer Empire

✨ 802 – 1431, Southeast Asia

The Khmer Empire was a major state in mainland Southeast Asia that flourished from the early 9th century to the 15th century. Its political center was in present-day Cambodia, although its influence extended at different times into parts of Thailand, Laos and Vietnam. The empire is traditionally dated from the reign of Jayavarman II, who established a unified kingdom around 802, to the decline of Angkor in the 15th century.

Khmer rulers built a highly organized state supported by agriculture, irrigation and regional trade. Their capital, Angkor, grew into a vast urban and ceremonial complex. At its height, it included temples, reservoirs, canals, roads and densely settled areas, reflecting the importance of water management in the region’s monsoon climate. Khmer society was strongly shaped by Hindu and later Buddhist traditions.

Kings sponsored large religious monuments, both to express political authority and to support religious institutions. Angkor Wat, built in the early 12th century under Suryavarman II, was originally dedicated to the Hindu god Vishnu and later became an important Buddhist site. Under Jayavarman VII, in the late 12th and early 13th centuries, the empire expanded and major Buddhist monuments were constructed, including the Bayon.

Angkor’s decline was gradual rather than the result of a single event. Changes in rainfall patterns, pressure on water-management systems, political developments and shifts in regional trade may all have contributed. The Khmer state did not simply disappear: political power moved toward other centers, while Khmer culture, language and religious traditions continued to shape Cambodia and neighboring regions.