Which empire was known for its extensive road system and use of quipus for record-keeping?

The Inca Empire is recognized for its remarkable road system that spanned over 25,000 miles, facilitating efficient communication, trade, and military movement across diverse terrains in the Andes Mountains. This extensive network of roads was crucial for integrating the vast territories of the Inca Empire, allowing for the swift movement of armies and the transportation of goods and resources.

Additionally, the Inca used quipus, which were knotted strings, as a unique method of record-keeping. Quipus enabled the Incas to manage their administrative tasks, including census data, taxes, and labor systems, by conveying numerical and narrative information through a series of knots in varying colors and arrangements. This innovative record-keeping system was tailored to the society's needs, as the Incas did not have a writing system in the traditional sense.

In contrast, the other empires mentioned are known for different achievements. The Roman Empire was famous for its own extensive road systems but did not use quipus. The Ottoman Empire was significant for its architectural contributions and trade networks, while the Persian Empire is noted for its administrative innovations and the Royal Road, but not for the quipu system. Therefore, the Inca Empire stands out uniquely for both its road network and record