How did growing and domesticating animals allow the Sumerians to build cities?

Growing and domesticating animals provided the Sumerians with essential resources such as food, labor, and materials. Livestock like sheep and goats supplied wool and meat, while oxen were used for plowing fields, enhancing agricultural productivity. This agricultural surplus enabled the Sumerians to support larger populations, leading to the development of complex societies and the establishment of cities. Additionally, the ability to control animal husbandry facilitated trade and economic stability, further promoting urban growth.