Final answer:
The focus of the question is likely the metal plow, developed around 5000 BCE, which was a critical agricultural tool promoting cultivation in areas with hard soil. The irrigation system mentioned, especially during 6000 to 3000 B.C., was crucial in advancing agriculture and had a profound impact on ancient economies and societies.
Step-by-step explanation:
The reference to an agricultural tool and the irrigation system used to promote crop growing suggests that the subject in question is the plow. The metal plow, a significant invention around 5000 BCE, allowed rocky areas to be cultivated, enhancing agricultural productivity.
The student's question likely points toward the plow or similar agricultural tools that facilitated early farming practices during the specified period of 6000 to 3000 B.C.
The importance of irrigation systems in farming cannot be overstated and was recognized as early as Mesopotamian and Egyptian times.
The development of irrigation not only increased the land's agricultural capacity but also significantly influenced the economy and the social structure of ancient civilizations.
For instance, in medieval Egypt, the irrigation system demanded immense labor, impacting the rural economy and necessitating maintenance by a workforce which included village elders and experts.
The Nile's monsoon-induced floods, essential for agriculture, were controlled by intricate systems of canals and weirs that facilitated the efficient distribution of water for crop cultivation.