Mesopotamia is located in Asia modern-day Iraq Tigris River and the Euphrates River.
the shortage of food forced people to move from the foothills of the Zagros Mountains to the plains between the Tigris and Euphrates rivers. This plains area became Sumer
Farmers in Sumer had times of flooding and drought.So they built irrigation systems to create a slow and steady water supply. Maintaining these complex systems made cooperation among villages.
The farmers were connected for miles around by these canals, farmers could no longer live apart they had to help so they can eat.
As the cities grew, they fought over the right to use more water.
They built irrigation systems to make a steady water supply also they fixed the food shortage and they have made the city grow.these are the advancement that help sumer rise into a region of human advancemant.