What was a common characteristic among the civilizations of Olmec, Maya, Aztec, and Inca?

The reason why all these civilizations developed complex societies is rooted in their sophisticated social structures, economies, and cultural practices. The Olmec, often regarded as one of the first major civilizations in Mesoamerica, established urban centers and monumental architecture. The Maya are well-known for their advancements in mathematics, astronomy, and writing, creating city-states with complex political systems. The Aztecs built a powerful empire characterized by a structured hierarchy and extensive trade networks. The Inca, in South America, organized a vast territory with a network of roads, agricultural terraces, and centralized governance that enabled them to manage resources effectively.

These features represent the complexity of social organization, cultural achievements, and economic management that are indicative of advanced civilizations. The other options do not accurately reflect the characteristics of these groups, as they all engaged in agriculture, were not nomadic but rather settled in established locations, and were not limited solely to North America, as the Inca were located in South America.