Apple ACPT Certification Exam 9L0 402

States formed as the results of a positive feedback loop where population growth results in increased information exchange which results in innovation which results in increased 9L0 509 resources which results in further population growth. The role of cities in the feedback loop is important. Cities became the primary conduits for the dramatic increases in information exchange that allowed for large and densely packed populations to form, and because cities concentrated 9L0 402 knowledge, they also ended up concentrating power."Increasing population density in farming regions provided the demographic and physical raw materials used to construct the first cities and states, and increasing congestion provided much of the motivation for creating states."