What are three reasons why the first cities were close to or on rivers?

1. Transportation: Rivers provided a convenient and efficient means of transportation for people and goods. They allowed for the movement of heavy materials, such as stone and timber, which were essential for building cities. Rivers also served as trade routes, connecting different regions and cultures.

2. Water Supply: Rivers were a reliable source of water for drinking, irrigation, and other purposes. In early civilizations, access to a steady water supply was crucial for survival and the development of agriculture. Cities located near rivers had an advantage in this regard.

3. Defense: Rivers could provide a natural defensive barrier against enemies. By building settlements on the banks of rivers, people could protect themselves from attacks by land and create a defensible position. Rivers could also serve as a source of food, as they were often teeming with fish and other wildlife.