Zahir Hernandez-Why did human societies get more complex?

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Across
  1. 3. Cities concentrated people and resources, which created demand for methods of
  2. 7. societies took the forms of agricultural
  3. 9. High population densities made it easier for diseases to
  4. 10. larger groups enabled innovative
  5. 11. how much is 2+2
  6. 14. By about 10,000 BCE, humans began to establish agricultural villages.This had massive
  7. 15. In order to facilitate cooperation between these many different classes and to
  8. 16. To facilitate the organization and administration of these large, dense communities, people began to create social
  9. 18. Larger groups demanded more sophisticated
Down
  1. 1. new social order was the evolution of the idea of
  2. 2. many societies had systems of
  3. 4. The invention of writing allowed elites to
  4. 5. Specialized labor gave rise to distinct
  5. 6. symbolic expression grew more
  6. 8. the growth of agriculture resulted in
  7. 12. Civilizations evoked images of
  8. 13. High population densities allowed for better
  9. 17. Larger groups gave rise to new