What helped the Inca rule such a vast Empire?

The Inca Empire effectively ruled its vast territory through a combination of centralized governance, extensive road networks, and a sophisticated system of communication. They implemented a hierarchical administrative structure that allowed local leaders to maintain order while adhering to Inca authority. Additionally, the use of the quipu, a system of knotted strings, facilitated record-keeping and the management of resources across the empire. Their ability to integrate diverse cultures and manage agricultural production also contributed to their stability and control.