Final answer:
The genesis of management is indeed rooted in the urban-based civilization of Sumer. This is evidenced by their pioneering efforts in agriculture, division of labor, and urban development.
Step-by-step explanation:
The statement that Sumer, located in what is today southern Iraq and the first urban-based civilization, contained the genesis of management, is True. Sumer was an ancient civilization that witnessed the rise of the world's first cities such as Uruk and Eridu, contributing significantly to the foundational concepts of management through the development of irrigation systems, division of labor, and urban planning. Moreover, the Sumerians are known for their advanced craftsmanship, evidenced by the specialized artisanal works found in the city of Ur, which would have required complex organizational skills.