WORLD CIVILIZATION

Detailed explanation-1: -Although the Sumerian city-states had much in common, they fought for control of the river water, a valuable resource.

Detailed explanation-2: -Over time, the Sumerians learned other ways to control the supply of water. They dug canals to shape the paths the water took. They also constructed dams along the river to block the water and force it to collect in pools they had built. The water was stored in these reservoirs for later use.

Detailed explanation-3: -Mesopotamian Warfare: Sumerians Common weapons included bows, spears, slingshots, battle axes, maces and knives. Protective armor was rare, although many carried shields. Professional soldiers in Mesopotamian warfare wore helmets of copper.

Detailed explanation-4: -As Sumerian cities grew, they fought over the right to use more water. Sometimes cities located upriver (closer to where the river begins) built new canals or blocked another cities’ canals. In this way, they kept water from reaching the cities that were downriver (farther from where the river begins).