Answer:
Sumer was responsible for many inventions and important contributions to inventions of both the time and today. However, Sumerian city-states often fought with each other. They went to war for glory and more territory. This power - hungry people build walls to protect from invading armies looking to loot, pillage, and grow wealthy. The walls surrounded each city - state, closing them off from the rest of Mesopotamia. This lead to isolation, and more war. The city - states were constantly in a state of unrest.
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African Americans continued to face a wide range of threats in the south, many of which were violent in nature such as threats of lynching and murder. Congress initially sent federal troops into the region to attempt to enforce the Reconstructions laws and mitigate these threats.
The Flight Was Heading Over To The Coast Not A Pacific Location.
