Explain what led to the outbreak of war among the Sumerian city-states. How did they isolate themselves from each other?

The Sumerian city-states were constantly competing for resources, land, and power. This competition led to frequent conflicts between the city-states, which eventually escalated into full-scale wars. The Sumerian city-states were also isolated from each other due to their geographical location. The Tigris and Euphrates rivers divided the region into two distinct areas, and the city-states were separated by mountains, deserts, and marshes. This physical separation made it difficult for the city-states to cooperate and form alliances, and it also made it easier for them to go to war with each other.