Final answer:
The White Temple and Ziggurat in Urku from the Sumerian period were predominantly constructed using mud bricks.
Step-by-step explanation:
The White Temple and Ziggurat in Urku (Modern Day Warka, Iraq) from the Sumerian period (ca. 3500 - 300 BCE) were predominantly constructed using mud Brick. The Sumerians built their structures out of mud bricks, including the large temples like the White Temple and ziggurat in Urku. These mud bricks were the primary building material of choice in the Near East during that time.