A structure used to extract this resource called an araghatta was described in the Rajatarangini by Kalhana. Zavareh contained a “two-layered” system for extracting this resource, which was operated by muqanni. The centralization of empires occurred due to their control of this resource, according (-5[1])to Karl Wittfogel’s book Oriental (-5[1])Despotism. (10[1])This resource was transported using poles called shadoof. (10[1]-5[1])In Iran, this resource was transported using a series of vertical (10[1])shafts (10[1])called qanat. The failure to manage this resource in barays (“bar-EYES”) is considered to have caused the collapse of the Khmer Empire. Proximity (10[1])to this resource provides the name of Mesopotamia. (10[1])For 10 points, name this resource used for irrigation and controlled by dams and canals. ■END■ (10[3])