The Sumerians settled in many Mesopotamian cities by 3000 BC, forming city-states that were the basic units of their civilization. They developed one of the earliest systems of writing.
1. #8: Sumer
• By 3000 BC they were settled in many cities in Mesopotamia.
• They formed city-states, the basic units of Sumerian civilization.
• They found basic writing.
• Source: Spielvogel Jackson, World History and Geography, 2013 Columbus,
OH, Mc Graw Hill Education