.

Criteria indicating the Development of Urban Civilization :

• increased settlement size
  
• concentration of wealth
  
• class-stratified society
  
• large-scale public works
  
• writing
  
• representational art
  
• knowledge and science of engineering
  
• foreign trade
  
• full-time specialists in non-subsistence activities
  
• political organization based on residence (territory) rather than kinship