section_path: History/Earliest governments
section_name: Earliest governments
paragraph_text: Earliest governments
  
  The moment and place that the phenomenon of human government developed is lost in time; however, history does record the formations of early governments. About 5,000 years ago, the first small city-states appeared. By the third to second millenniums BC, some of these had developed into larger governed areas: Sumer, ancient Egypt, the Indus Valley civilization, and the Yellow River civilization.
  
  One reason that explains the emergence of governments includes agriculture. Since the Neolithic Revolution, agriculture was an efficient method to create food surplus. This enabled people to specialize in non-agricultural activities. Some of them included being able to rule over others as an external authority. Others included social experimentation with diverse governance models. Both these activities formed the basis of governments. These governments gradually became more complex as agriculture supported larger and denser populations, creating new interactions and social pressures that the government needed to control. David Christian explains
  
  As farming populations gathered in larger and denser communities, interactions between different groups increased and the social pressure rose until, in a striking parallel with star formation, new structures suddenly appeared, together with a new level of complexity. Like stars, cities and states reorganize and energize the smaller objects within their gravitational field.
  
  Another explanation includes the need to properly manage infrastructure projects such as water infrastructure. Historically, this required centralized administration and complex social organisation, as seen in regions like Mesopotamia. However, there is archaeological evidence that shows similar successes with more egalitarian and decentralized complex societies.