How have natural barriers affected the development of civilizations? Identify 3 examples of natural barriers.

One of the primary ways geography affected early civilizations was in determining the location of settlements. Since early humans needed access to water and fertile ground for agriculture, cities tended to spring up along rivers and flood plains. In addition, geographic features such as mountains frequently served as barriers and provided natural borders between civilizations. Mountains, swamps, deserts and icefields are some examples of natural barriers.

Mountains, Swamps, icefeilds