date_of_birth jayavarman ii
Angkor (" Capital City ") was the capital city of Khmer Empire , which flourished from approximately the 9th to 15th centuries . Angkor was a megacity supporting at least 0 . ___MASK52___ % of the global population during 1010 - ___MASK66___ . The city houses the magnificent Angkor Wat , one of Cambodia ' s popular tourist attractions . The Khmer Empire , officially the Angkor Empire , the predecessor state to modern Cambodia (" Kampuchea " or " Srok Khmer " to the Khmer people ), was a powerful Hindu - Buddhist empire in Southeast Asia . The empire , which grew out of the former kingdoms of Funan and Chenla , at times ruled over and / or vassalised most of mainland Southeast Asia . The Gulf of Thailand , formerly the Gulf of Siam , is a shallow inlet in the western part of the South China and Eastern Archipelagic Seas , a marginal body of water in the western Pacific Ocean . The gulf is around ___MASK54___ km ( 497 mi ) long and up to 560 km ( 348 mi ) wide , has a surface area of 320 , 000 km ( 123 , 553 sq mi ) and is surrounded on the north , west and southwest by Thailand , on the northeast by Cambodia and Vietnam . The South China Sea is to the southeast . Vietnam , officially the Socialist Republic of Vietnam ( SRV ), is the easternmost country on the Indochina Peninsula in Southeast Asia . With an estimated ___MASK76___ . ___MASK14___ million inhabitants , it is the world ' s 14th - most - populous country , and the eighth - most - populous Asian country . Vietnam is bordered by China to the north , Laos to the northwest , Cambodia to the southwest , Thailand across the Gulf of Thailand to the southwest , and the Philippines , Malaysia and Indonesia across the South China Sea to the east and southeast . Its capital city has been Hanoi since the reunification of North and South Vietnam in 1976 . Jayavarman II ( Khmer :          ) ( c . 770 -- 835 ) was a 9th - century king of Cambodia , widely recognized as the founder of the Khmer Empire , which ruled much of the Southeast Asian mainland for more than six hundred years . Historians formerly dated his reign as running from 802 AD to 835 AD . Before Jayavarman II came to power , there was much fighting among local overlords who ruled different parts of Cambodia . The country was not unified under one ruler . Cambodia ( or Kampuchea ), officially known as the Kingdom of Cambodia ( Preh Réachéanachâk Kâmpchéa ), is a country located in the southern portion of the Indochina Peninsula in Southeast Asia . It is in area , bordered by Thailand to the northwest , Laos to the northeast , Vietnam to the east , and the Gulf of Thailand to the southwest . Khmer people are a Southeast Asian ethnic group native to Cambodia , accounting for approximately ___MASK76___ % of the country ' s ___MASK41___ . 2 million people . They speak the Khmer language , which is part of the larger Austroasiatic language family found throughout eastern and central India and Bangladesh , in Southeast Asia , South China and numerous islands in the Indian Ocean .