How did the growth of surplus food in Mesopotamia lead to the development of summers first cities?

The growth of surplus food in Mesopotamia, primarily due to advancements in agriculture and irrigation, allowed communities to support larger populations. This surplus enabled individuals to pursue specialized trades rather than solely focusing on food production, leading to social stratification and economic diversification. Consequently, as people settled in one place and formed complex social structures, the first cities emerged, characterized by centralized governance, trade networks, and cultural developments. The availability of surplus food was thus a fundamental catalyst for urbanization and the rise of civilization in the region.