I. Main three gods were the chief god Haldi, the sky god Teisheba, and the solar god Sivini.

II.They established their castles and cities on high rocky areas and used the level grounds for agricultural purposes.

III. Sarduri I established the Urartu state, making Tushpa (Van) the capital.

IV. They subjugated all Western Anatolia from the seventh century on.

Which of the above is/are true about the Urartian Civilization?