Who were organized by the rulers to built great projects at the centers?

The rulers often organized large groups of laborers, including skilled artisans, farmers, and conscripted workers, to construct monumental projects such as temples, palaces, and public works. These projects were typically undertaken during times of surplus agricultural production, allowing rulers to mobilize resources and manpower without disrupting the economy. Additionally, in some societies, the use of slave labor or tribute from conquered territories also contributed to the workforce needed for these grand undertakings.