Khmer Empire

• 1. Imperial Foundations And Rise

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  In 802 AD, a Khmer prince named Jayavarman II stood atop the sacred Mount Mahendraparvata, now known as Phnom Kulen. He performed a grandiose consecration ritual taken from Hindu tradition and proclaimed himself chakravartin, a title meaning universal ruler. This moment marked the conventional beginning of the Khmer Empire, which historians call the Angkor period. Before this event, the region was dominated by the former civilization of Chenla. Jayavarman II had previously established Indrapura as his capital near modern-day Kampong Cham around 781. After returning to his home in Chenla, he quickly built up influence and defeated competing kings. By 790, he became king of an empire called Kambuja. He then moved his court northwest to Mahendraparvata, far inland north from the great lake of Tonlé Sap. His successors kept extending the territory of Kambuja without major wars during the early years. Indravarman I reigned from 877 to 889 and initiated extensive building projects enabled by wealth gained through trade and agriculture. He constructed Bakong circa 881, which bears striking similarities to the Borobudur temple in Java. Exchanges of travelers and missions between Kambuja and the Sailendras in Java brought technical and architectural details to Cambodia. The site of Angkor would eventually arise some 20 kilometers northwest of Hariharalaya, the new capital established under Jayavarman II.

• 2. Hydraulic Engineering And Urban Scale

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  Satellite imaging has revealed that Angkor's elaborate water management network was the most extensive pre-industrial urban complex in the world during its peak in the 11th to 13th centuries. The Greater Angkor Region had a population of approximately 700,000 to 900,000 at its height, making it one of the most populous cities of the medieval world. This massive population relied on an intricate system of reservoirs and canals used for trade, transportation, and irrigation. Yasovarman I created the East Baray, a massive water reservoir measuring several square kilometers, around 889 to 915. The ancient Khmers planted rice near the banks of lakes or rivers, in irrigated plains surrounding villages, or in hills when lowlands flooded. Farmers utilized networks of canals and barays to form large-scale rice farming communities surrounding Khmer cities. Three rice harvests per year were possible before ecological breakdown occurred, contributing substantially to the empire's prosperity. During the fourteenth and fifteenth centuries, severe climatic changes impacted this water management system. Periods of drought led to decreases in agricultural productivity, while violent floods due to monsoons damaged infrastructure. To adapt to growing populations, trees were cut down from the Kulen hills and cleared out for more rice fields. That created rain runoff carrying sediment into the canal network. Any damage to the water system would have enormous consequences for food production.

• 3. Architectural Evolution And Religious Shifts

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  The majestic monuments of Angkor, such as Angkor Wat and the Bayon, bear testimony to the Khmer Empire's immense power and wealth over time. Early temples employed stepped pyramid structures to represent sacred temple-mountains, with brick towers on single bases. Jayavarman V established Banteay Srei between 967 and 1000, considered one of the most beautiful and artistic of Angkor. Ta Keo was the first temple built completely of sandstone during his reign. Suryavarman II dedicated Angkor Wat to the god Vishnu over a period of 37 years starting in 1113. The construction demonstrates artistic and technical achievements through mastery of stone masonry. Jayavarman VII constructed the Bayon with towers bearing faces of the boddhisattva Avalokiteshvara, each several meters high carved out of stone. He also built Ta Prohm for his mother and Preah Khan for his father. In contrast to predecessors, Jayavarman VIII destroyed many Buddha statues and converted Buddhist temples to Hindu temples before being deposed in 1295. The last Sanskrit inscription is dated 1327 and describes succession following kings' adoption of Theravada Buddhism. This religious shift meant kings were no longer considered devarajas or god kings, reducing the need to erect huge temples. Bronze became a preferred material for representing deities, with statues estimated at 5-6 meters long discovered in 1936.

• 4. Military Campaigns And Regional Conflicts

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  In 1177, the capital was raided and looted in a naval battle on the Tonlé Sap lake by a Cham fleet under Jaya Indravarman IV. Khmer king Tribhuvanadityavarman was killed during this attack. King Jayavarman VII gathered an army and retook the capital after Champa had conquered Angkor. He continued to wage war against Champa for another 22 years until the Khmer defeated the Chams in 1203. According to Chinese sources, Jayavarman VII added Pegu to the territory of the Khmer Empire in 1195. Suryavarman II's campaigns against Champa and Dai Viet were unsuccessful though he sacked Vijaya in 1145. In 1283, Kambuja was threatened externally by the Mongol-led Yuan dynasty. Jayavarman VIII avoided war with general Sogetu by paying annual tribute starting in 1285. The Ayutthaya Kingdom arose from a confederation of three city-states on the Lower Chao Phraya basin beginning in the fourteenth century. Angkor was besieged by the Ayutthayan king Uthong in 1352 and captured the next year. Ramesuan besieged Angkor again in 1393, capturing it the following year. Finally, in 1431, the Khmer king Ponhea Yat abandoned Angkor as indefensible and moved to the Phnom Penh area.

• 5. Societal Structure And Daily Life

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  Zhou Daguan arrived in Angkor in August 1296 and recorded that in the recent war with the Siamese, the country was utterly devastated. He remained at the court until July 1297 and wrote a detailed report on life in Angkor known as The Customs of Cambodia. His account informs us that towers of the Bayon were once covered in gold. Zhou described how ordinary people wore a sampot where the front end was drawn between legs and secured at back by belt. Women wore a strip of cloth to cover chest while noble women had lengthened versions going over shoulder. Houses of farmers were situated near rice paddies on edges of cities with walls made of woven bamboo and thatched roofs on stilts. A house divided into three rooms included parents' bedroom, daughters' bedroom, and largest living area. Kitchen located at back or separate room. Nobles lived in palace with much larger houses made of same materials but wooden shingles and elaborate designs. The marketplace contained no permanent buildings; it was an open square where traders sat on ground on woven straw mats selling wares. No tables or chairs existed there. Some traders protected from sun with simple thatched parasol. Trade and economy mainly run by women who enjoyed significant rights and freedom.

• 6. Ecological Collapse And Imperial Decline

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  Scientists working on the Greater Angkor Project believe Khmers had elaborate system of reservoirs and canals used for trade, transportation, and irrigation. During fourteenth and fifteenth centuries, severe climatic changes impacted water management system. Periods of drought led to decreases in agricultural productivity while violent floods damaged infrastructure during vulnerable times. To adapt to growing population, trees cut down from Kulen hills cleared out for more rice fields creating rain runoff carrying sediment to canal network. Any damage to water system would have enormous consequences. Plague theory suggests severe epidemic outbreak may have hit heavily populated Angkor contributing to fall of empire. Black Death affected Asia as plague first appeared in China around 1330 and reached Europe around 1345. Possible diseases include bubonic plague, smallpox, and malaria. By 14th century, Kambuja suffered long arduous steady decline due to religious conversion from Vishnuite-Shivaite Hinduism to Theravada Buddhism affecting social political systems. Incessant internal power struggles among Khmer princes occurred frequently. Vassal revolt and foreign invasion also contributed to collapse. The retreat from concept of devaraja may have led to loss of royal authority and lack of workers. Water-management apparatus degenerated meaning harvests reduced by floods or drought.