Why was the Aztec social structure so rigid?

The Aztec social structure was rigid primarily due to a hierarchical system that placed significant emphasis on class and lineage. Society was divided into distinct classes, including nobles, priests, commoners, and slaves, with limited social mobility between these groups. This rigidity was reinforced by cultural beliefs that emphasized the divine right of rulers and the importance of maintaining social order. Additionally, the roles and responsibilities associated with each class were clearly defined, further entrenching the social divisions within Aztec society.