Describe the principle characteristics of Paleolithic hunting and gathering societies.

Why did the earliest cities appear in the Tigris and Euphrates River valleys?

Describe the main differences between villages like Jericho and early cities.

How were humans, in some areas, able to transform their ways of living from hunting and gathering to the more complex forms of life of those in villages like Catal Huyuk and, later, the earliest cities? What geographic factors allowed for a more stable but more complex way of life?