What were the Inca's key administrative innovations?

• A. An extensive road system, the quipu for records, and the mit'a labor system.
• B. A written constitution and parchment archives.
• C. A centralized republic with elected representatives.
• D. A feudal system with lords and vassals.

Answer: (A)

Inca administrative innovations centered on unifying governance through infrastructure, flexible record-keeping, and organized labor. The extensive road system connected distant provinces, enabling rapid movement of people, goods, armies, and official messages. That network made centralized administration feasible across a vast and varied landscape, so officials could monitor regions, collect taxes, and respond quickly to problems.

The quipu served as a practical way to keep records in a society without a traditional writing system. Knotted strings encoded quantities, goods, populations, and deadlines, allowing administrators to track tribute, census data, and resource flows even in remote areas. This adaptable system kept the empire’s accounting coherent across diverse communities.

The mit’a labor system mobilized essential workforce for state projects. Communities contributed labor on a rotating basis for public works like roads, temples, terraces, and mines, linking local effort to imperial needs and maintaining the infrastructure and state functions that kept the empire running smoothly.

Other options don’t fit because the Inca lacked a written constitution and parchment archives, a centralized republic with elected representatives, or a feudal system with lords and vassals.