This solution covers the concept of neolithic urban development. It describes the differences between the neolithic cities of Jericho and Catal Hoyuk as urban centers and addresses ideas regarding population growth and its role as a contributing factor in both the need for and the design of urban centers such as these. While human populations grew, so did the need to find sustainable food sources and means of shelter. Moving larger and larger populations became difficult, so the need for permanent dwellings increased as well. These factors not only led to new ideas regarding feeding and housing the population, but also to the beginning of a socio-political system that was far more complex than the simple social hierarchy that had worked for the nomadic people. Additionally, the changes that were happening in terms of subsistence and shelter ultimately had an impact on religious practices and belief systems as well.