Karni na 12 lokaci ne na rikici da gwagwarmayar mulki na zalunci.Karkashin Suryavarman II (mai sarauta 1113 – 1150) masarautar ta haɗe cikin gida ^[31] kuma daular ta kai matsayinta mafi girma kamar yadda take sarrafa Indochina kai tsaye ko a kaikaice, Gulf of Thailand da manyan yankuna na arewacin tekun kudu maso gabashin Asiya.Suryavarman II ya ba da izini ga haikalin Angkor Wat, wanda aka gina a cikin shekaru 37, wanda aka keɓe ga allahn Vishnu.Hasumiyarsa guda biyar da ke wakiltar Dutsen Meru ana ɗaukar su a matsayin mafi kyawun bayanin gine-ginen Khmer na gargajiya.A gabas, yakin Suryavarman II akan Champa da Dai Viet bai yi nasara ba, ^[31] ko da yake ya kori Vijaya a 1145 kuma ya kori Jaya Indravarman III.^[32] Khmers sun mamaye ^[Vijaya] har zuwa 1149, lokacin da Jaya Harivarman I. ya kore su.Ya biyo bayan wani lokaci na tashin hankali da kuma mamayewar Cham wanda ya ƙare a cikin buhun Angkor a cikin 1177.