The fact that such large-scale public works were possible implies the development of work skills and the establishment of the royal authority which not only had the power to mobilize a large workforce but also the control over a wide-ranging area.
こうした大規模な土木工事が可能になったということは、技術の発達とともに、多くの労働力を使えるだけの権力をもち、広範囲に支配を広げた王権の成立を意味する。