What methods did the Inca use to unify their large empire?

The Inca used several methods to unify their large empire:

1. Infrastructure: The Inca Empire built an extensive road network known as the Inca Road, which connected the various regions of the empire. This allowed for the efficient movement of goods, people, and information across the empire.

2. Administrative organization: The Inca Empire was divided into smaller administrative units called provinces, each of which was ruled by an Inca governor. These governors were responsible for maintaining order, collecting tribute, and enforcing Inca laws in their respective provinces.

3. Quipu system: The Inca used a system of knotted strings called quipu to record numerical and statistical information. This allowed for efficient communication and record-keeping throughout the empire.

4. Religion: The Inca religion played a significant role in unifying the empire. The Inca rulers were considered to be descendants of the sun god Inti, and their authority was believed to be divinely ordained. The Inca also built numerous temples and religious sites throughout the empire, which helped to foster a sense of shared religious identity among the diverse ethnic groups within the empire.

5. Military conquest: The Inca Empire expanded through military conquest, subjugating neighboring peoples and integrating them into the empire. The Inca army was well-organized and highly disciplined, which allowed them to conquer and control large swathes of territory.

6. Tribute and reciprocity: The Inca Empire maintained control over its subjects through a system of tribute and reciprocity. In exchange for protection and certain benefits, conquered peoples were required to pay tribute in the form of goods, labor, or military service. This system helped to centralize power and resources within the empire.

Overall, the Inca employed a combination of political, religious, military, and economic strategies to unify their empire and maintain control over its diverse populations.