In ancient Mesopotamia, the people of Sumer faced many challenges. In the foothills of the Zagros Mountains, the Sumer’s were running out of land to expand their village and the population was growing. The way they solved that problem was to move out of the foothills into the plains. Soon, there was a problem in the plains as well. In the spring, the snow in the Zagros Mountains melted and the rivers over flowed. This caused all of the crops to drown. The rest of the year, the soil is hard and dry making it near impossible to grow food. The way they solved that problem was to build a large wall that would protect the crops from flooding and redirect the water into ditches so that they can store the water for when it was dry. . With the new
