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  Jayavarman II unified smaller states to create one large empire. The capital is in the Angkor region of Cambodia.
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  Start of the Cham kingdom invasion that affects much of the Khmer Empire's eastern territory.
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  The Cham kingdom invades and attacks much of the Khmer Empire's eastern territory.
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  End of the Cham kingdom attacks that affects much of the Khmer Empire's eastern territory.
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  Jayavarman VII defeats the Chams and expands the empire to the further extent. This incorporates much of the land that present-day Laos, Thailand and Burma current stand on.
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  Rule of Jayavarman VIII. He renounces Buddhism and orders his men to destroy any existing Buddhist temples and images. Hinduism then becomes the main religion of the Empire.
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  Buddhism grows in importance again. It bcomes the main religion for the Khmer Kings.
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  1431 - The Thai army attacks Angkor.
 1432 - Constant invasions cause the Khmer to abandon Angkor. Over a few centuries, the jungles grows around and over Angkor. Its location is forgotten to time.
 1440s - Khmer rules relocate the capital to Phnom Penh.
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  Siamese [Thai] attacks the Khmer. They are able to defeat the Khmer King.
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  Vietnamese armies repeatedly attack Khmer forces in the Mekong River Delta. They finally defeat the Khmer. The approximate modern borders of Cambodia are determined.
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  Jayavarman II is enthroned as a devaraja r "god-king".
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  The Khmer Empire expands and the famous temple of Angkor Wat is built. The religion Buddhism, becomes important.