It didn't, food surplus led to irrigation, division of labor, writing, trade
Increased development of cropland, A surplus of food & a rise of the city-states.
A food surplus
No, irrigation did not decrease the amount of food in Mesopotamia; in fact, it had the opposite effect. The development of irrigation systems in Mesopotamia allowed for more efficient and reliable water supply to crops, which led to increased agricultural productivity and surplus food production. This surplus food supported the growth of cities and civilizations in the region.
social divisions
It gave people a surplus of food.
Increased development of cropland, A surplus of food & a rise of the city-states.
the surplus food lead to less roaming to hunt and gather, and less fighting
It provided a surplus of food which allowed the people to move on from a struggle for survival towards civilisation.
A surplus of food allowed people to specialize in different jobs.
They devised an innovative irrigation system, which created a surplus of food.
It lead to division of labor
A food surplus lead to specializations in most civilizations because it would feed all people. This would feed not only the people that produced the food, but the other people that were in the civilization