Environmental determinism (also known as climatic determinism or geographical determinism) is the study of how the physical environment predisposes societies and states towards particular development trajectories. Jared Diamond, Jeffrey Herbst, Ian Morris, and other social scientists sparked a revival of the theory during the late twentieth and early twenty-first centuries. This "neo-environmental determinism" school of thought examines how geographic and ecological forces influence state-building, economic development, and institutions. While archaic versions of the geographic interpretation were used to encourage colonialism and eurocentrism, modern figures like Diamond use this approach to reject the racism in these explanations. Diamond argues that European powers were able to colonize due to unique advantages bestowed by their environment as opposed to any kind of inherent superiority.
Early theories of environmental determinism in Ancient China, Ancient Greece, Ancient Rome suggested that environmental features completely determined the physical and intellectual qualities of whole societies. Guan Zhong (720–645 BC), an early chancellor in China, held that the qualities of major rivers shaped the character of surrounding peoples. Swift and twisting rivers made people "greedy, uncouth, and warlike". The ancient Greek philosopher Hippocrates wrote a similar account in his treatise "Airs, Waters, Places".
In this text, Hippocrates explained how the ethnicities of people were connected to their environment. He argued that there existed a connection between the geography surrounding people and their ethnicity. Hippocrates described the effects of different climates, customs, and diets on people and how this affected their behaviors, attitudes, as well as their susceptibility to diseases and illnesses.
For example, he explains the Asian race were less warlike compared to other civilizations due to their climate.