- 
  
  Writing was invented by the Sumerians around 3100 b.c
- 
  
  First king of unified Egypt, joined upper and lower Egypt in a single centralized monarchy.
- 
  
  Sargon, the ruler of Akkad conquered the city states of Sumer about 2300 B.C. He built the first empire known in history.
- 
  
  The Code of Hammurabi is a well-preserved Babylonian law code of ancient Mesopotamia. The Code of Hammurabi is a well-preserved Babylonian law code of ancient Mesopotamia
- 
  
  Babylon is just one among many small kingdoms in Mesopotamia when Hammurabi becomes its ruler in about 1728 BC. He defeats his rivals in the region, and establishes a society based on the rules