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  Hunter Gather people was said to live in Cambodia. Evidence of this happening is the human habitation, food for them and abundant of water.
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  Archaeologist has discovered evidence of use of iron from a thousand years ago
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  King Jayavarman II was the king of the empire and became a devaraja.
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  King Jayavarman II had constructed and finished the royal palace in which he soon died
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  Jayavarman III was succeed by his cousin named Indravarman who expanded the artificial lakes
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  This is the year that Indravarman had died. Which Yasovarman took over the empire.
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  When Yasovarman had died five kings were ruling the empire for fifty years and only two of Yasovarman descendants were one of the kings.
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  King Jayavarman V constructed Angkor Wat which was one of the great wonders of the ancient world.
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  The decline of the empire was caused by expanding land, being attacked, their water sources was being destroyed by erosion. The picture down below shows the expansion of the land.
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  The last king that ruled the Khmer had abandoned the capital
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  The Vietnamese had attacked the Khmer empire at the Mekong river