Why do think the Aztecs allowed some conquered peoples to govern themselves with relatively little interference?

The Aztecs allowed some conquered peoples to govern themselves with relatively little interference as a strategy to maintain stability and reduce the likelihood of rebellion. By allowing local leaders to retain authority and manage day-to-day affairs, the Aztecs could extract tribute and resources more efficiently. This approach also fostered a degree of loyalty among the conquered populations, as they could preserve aspects of their own culture and governance. Ultimately, it helped the Aztec Empire to expand and maintain control over a vast and diverse territory.