Mesopotamia initially focused their civilization on agriculture, but after a while, as they began to build larger cities, they began to transition to the creation and use of metal, as in the case of the Chinese dynasty made. Mesopotamia, Shang China, and Zhou also represented a huge part of its trade-based economy. Shang and Zhou China most likely based their civilization on some of the successes experienced by Mesopotamia and countered what they thought would be better implemented in their