Final answer:
One characteristic of early civilizations was the development of settled agricultural communities, leading to population stability, distinct cultures, specialization of labor, urban centers, and social stratification.
Step-by-step explanation:
One characteristic of early civilizations includes the development of settled agricultural communities along large rivers which allowed populations to grow and remain in one place. This stability led to the emergence of distinct cultures with their own social organizations, religious beliefs, technologies, and arts.
The surplus of food produced by these settled communities allowed for the specialization of labor, where individuals could focus on tasks other than farming, such as crafting, governance, and religious ceremonies.
Another defining characteristic was the establishment of urban centers, or cities, where trade and the distribution of goods could take place.
These early cities often featured monumental architecture like temples and palaces thanks to advancements in technology and the need for rulers to display their power and wealth. Over time, such developments contributed to the growth of social stratification and the emergence of ruling classes.