Final answer:
The presence of fresh water, particularly in river valleys, was the most crucial physical feature in the development of early societies. Geography, including the availability of water and fertile lands, directly influenced agricultural development, leading to sedentary communities and, subsequently, complex civilizations.
Step-by-step explanation:
The physical feature that best supported the development of early societies was the presence of fresh water, particularly in river valleys. The importance of geography in shaping early human societies cannot be overemphasized. The availability of natural resources, fertile land, and water for irrigation were critical for the advent of agriculture, which, in turn, led to the establishment of sedentary communities. This agricultural foundation gave rise to the development of complex societies with sophisticated social structures.
Not only did the proximity to water allow for agricultural development, but it also facilitated trade and commerce, which were vital for the growth of cities and civilizations. Crafting, building, and cultural advancements such as the arts and writing could flourish in these well-resourced locations. Rivers like the Nile, Tigris, Euphrates, and Yellow River were cradles of early human civilizations and exhibit how essential water was to their development.
Over time, these river valleys became the centers of trade, art, social hierarchy, and power, and their rich, fertile soils provided the sustenance needed for these civilizations to thrive. The transition from nomadic lifestyles to settled agricultural communities marked a significant milestone in human history and depicted a clear relationship between physical geography and societal growth.