Final version

___The King who actually built Angkor Wat was called Suryavarman II.
Suryavarman II, son of Ksitindradity and Narendralakshmi, Khmer king renowned as a religious reformer and temple builder. Under his rule the temple of Angkor Wat, the world's largest.
Suryavarman was formally crowned in 1113, with his guru, the powerful priest Divakarapandita, presiding.
The king was a religious reformer who blended the mystical cults of Vishnu and Shiva, supreme Hindu deities, and promulgated Vaisnavism as the official religion, rather than Buddhism, which had briefly flourished under his predecessors.
One can still find traces of Buddhism within the art of Angkor Wat however._____
Angkor Wat, dedicated to Vishnu, was begun in the early years of Suryavarman's reign and was not finished until after his death. Surrounded by a wall and a moat, the building is decorated with sculptures portraying Suryavarman as Vishnu; he is shown reviewing his troops, holding audiences, and performing other functions of a sovereign. Suryavarman also sponsored the construction of several other temples in the style of Angkor Wat. Angkor Wat is but one of many temples because God. Kings had to build their own temples to glorify their status as gods on earth.
The role of the god king was to make the waters fill the Tonle Sap and bring glory to the Khmer world.So they performed ceremonies at the beginning of the monsoons and they went to war.